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Recent questions tagged kinematics
Questions
The equation of trajectory of a projectile is given by $y=x -\large\frac{x^2}{100}$ Find the maximum height.
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
asked
Jul 15, 2014
by
meena.p
1
answer
The equation of trajectory of a projectile is given by $y=x -\large\frac{x^2}{100}$ Find velocity of projection .
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
The equation of trajectory of a projectile is given by $y=x -\large\frac{x^2}{100}$ Find velocity of projection .
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
It is possible to project a particle with a given velocity in two possible ways so as to make it pass through a point at a horizontal distance R from the point of projection .If $H_1$ and $H_2$ are the corresponding maximum height and $H$ is maximum height when the particle is projected at $45^{\circ}$ with the same speed, then what is $H_1+H_2$
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
It is possible to project a particle with a given velocity in two possible ways so as to make it pass through a point at a horizontal distance R from the point of projection . If $t_1$ and $t_2$ are the time taken to reach this point in two possible ways then what is $t_1t_2$?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
A ball rolls off the top of a stairway with a velocity u. If the height of each step is h, the breadth is b and the ball hits the edge of nth steps, the find the value of n.
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
A man can throw a stone 60 m away . How high can he throw the stone vertically upward?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 15, 2014
by
meena.p
1
answer
A car travels east at a speed of $30m/s^{-1}$ . It turns left through an angle of $90^{\circ}$ and continues to travel with the same speed. What is the change in its velocity ?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
motion-in-a-plane-with-constant-acceleration
difficult
asked
Jul 15, 2014
by
meena.p
1
answer
A body is projected with speed $v_1$ at an angle of $45^{\circ}$ to the horizontal from a point A. At the same instant, another body is projected vertically below the highest point of the path of the first body, Both the bodies will collide if $v_1/v_2$ is
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 14, 2014
by
meena.p
1
answer
A projectile is thrown with velocity u making angle $\theta$ with vertical. It just crosses the tops of two poles each of height h after 1 second respectively. The maximum height of projectile is
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 14, 2014
by
meena.p
1
answer
From a point on the group at a distance 2 meters from the foot of a vertical wall , a ball is thrown at an angle $45^{\circ}$ which just clear the top of the wall and afterwards strikes the ground at a distance 4 m on the other side. The height of the wall is
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 14, 2014
by
meena.p
1
answer
The velocity at the maximum height of a projectile is half of its initial velocity of projection u. Its range on horizontal plane is
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 14, 2014
by
meena.p
1
answer
A body is projected at an angle $30^{\circ}$ to the horizontal with a speed $39.2 ms^{-1}$.What is the angle of projectile with the horizontal after 2 seconds ? (take $g= 9.8\;ms^{-2} )$
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 14, 2014
by
meena.p
1
answer
The velocity of projection of an oblique projectile is $(6i +8j)m/s$ . The horizontal range of projectile is $( g=10 m/s)^2$
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 14, 2014
by
meena.p
1
answer
The range of projectile which is launch at an angle of $15^{\circ}$ with the horizontal is $1.5 \;km$ what is the range of the projectile if it is projected at an angle of $45^{\circ}$ to the horizontal ?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 14, 2014
by
meena.p
1
answer
Two bodies are projected from the same point with the same speed but in different directions so as to have the same range. The ratio of their times of flight are .
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 11, 2014
by
meena.p
1
answer
The greatest distance to which a man throw a stone is a. The greatest height to which he can throw it will be
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 11, 2014
by
meena.p
1
answer
An object is thrown along a direction inclined at an angle of $45^{\circ}$ with the horizontal range of the particle is equal to
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 11, 2014
by
meena.p
1
answer
A particle starts from the position of rest under a constant acceleration. If travels a distance x in the first 10 seconds and distance y in the next 20 seconds . Then
jeemain
physics
class-11
ch3
kinematics
motion-in-a-straight-line
acceleration
easy
asked
Jul 10, 2014
by
meena.p
1
answer
The greatest acceleration or deceleration that a train may have is $\alpha$ .The minimum time in which the train can get from one station to the next at a distance S is
jeemain
physics
class-11
unit2
ch3
kinematics
motion-in-a-straight-line
acceleration
asked
Jul 10, 2014
by
meena.p
1
answer
The front point of a train moving with constant acceleration crosses a signal post with velocity u and the end point of the train crosses the signal post with velocity v. With what velocity the middle point of the train crosses the signal post ?
jeemain
physics
class-11
unit2
ch3
kinematics
motion-in-a-straight-line
asked
Jul 10, 2014
by
meena.p
1
answer
A car travels along straight road for the first half-time with a velocity $v_1$ and the second half-time with velocity $v_2$ The average velocity of cars is
jeemain
physics
class-11
unit2
ch3
kinematics
motion-in-a-straight-line
speed-and-velocity
easy
average-velocity
asked
Jul 10, 2014
by
meena.p
1
answer
A 150m long train is moving with uniform velocity of 45km / h. The time taken by train to cross the bridge of length 850m is ?
physics
kinematics
asked
Jan 22, 2014
by
balaji.thirumalai
1
answer
The direction of the angular velocity vector is along
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
A wheel is rotating at $900 \;rpm$ about its axis. When the power is cut off, it comes to rest in 1 minute. The angular retardation in $rad/s^2$ is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
The wheel of a car is rotating at the rate of 1200 revolutions per minute. On pressing the acceleration for 10 seconds, it starts rotating at 4500 revolutions per minute. The angular acceleration of the wheel is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
When a ceiling fan is switched on, it makes 10 rotations in the first 3 seconds. Assuming uniform angular acceleration, of how many revolutions it will make in the next 3 seconds?
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
medium
asked
Nov 25, 2013
by
meena.p
1
answer
A wheel rotates with a constant acceleration of $2.0\;radians /s^2$. If the wheel starts from rest, the number of revolutions it makes in the first $10$ seconds will be approximately
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
A wheel has a speed of 1200 revolution per minute and is made to slow down at a rate of $4\;radian/s^2$. The number of revolutions it makes before coming to rest is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
If a fly wheel makes 120 revolutions per minute then its angular speed will be
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
uniform-circular-motion
easy
asked
Nov 25, 2013
by
meena.p
1
answer
An aircraf flies a $400 km/hr$ in still air. A wind of $200 \sqrt 2 km/hr$ is blowing from south. A pilot wishes to travel from A to a point B north east of A .Find the direction he must steer and time of journey if $AB=1000km$
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
vectors
scalars-and-vectors
difficult
asked
Jul 4, 2013
by
meena.p
1
answer
An open lift is moving upward with velocity $10 m/s$. It has an upward acceleration of $2 m/s^2$ . A ball is projected upward with velocity $20 m/s$ relative to ground. Find the time when ball meets the lift
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
medium
asked
Jul 3, 2013
by
meena.p
1
answer
If initial velocity of projection is $10 m/s$ and angle of projection is $60 ^{\circ}$, find range R.
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 3, 2013
by
meena.p
1
answer
A ball rolls off top of a stair way with horizontal velocity $u\; m/s$ If height of each step is h and width of each step is b the ball will hit the edge of $n^{th}$ step if $n$ is equal to
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 3, 2013
by
meena.p
1
answer
Distance between frog and an insect on a horizontal plane is 10m. Frog can jump with maximum speed of $\sqrt {10}m/s$ minimum number of jumps required by the frog to catch the insect is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
The path followed by a body projected along y axis is given by $y=\sqrt 3 x-\large\frac{1}{2}$$ x^2$. If $g=10 m/s^2$ Then initial velocity of projectile is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
A particle moves a distance x in time t according to equation $x=(t+5)^{-1}$ acceleration of particle is proportional to
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
acceleration
medium
asked
Jul 3, 2013
by
meena.p
1
answer
A bus is moving with a speed of $10 m/s$ on a straight road. A scooterist wishes to overtake the bus in $100 s$. If the bus is at a distance of $1 \;km$ from the scooterist with what speed should the scooterist chase the bus?
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
relative-velocity
medium
asked
Jul 3, 2013
by
meena.p
1
answer
A ball takes t seconds to fall from height $h_1$ and $2t$ seconds to falls from height $h_2$.Then $h_1/h_2$ is
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
A particle starts from rest from top of a smooth inclined plane of a given base. The time of fall is least when inclination of the plane to horizontal is
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
An aeroplane is moving with horizontal velocity u at a height h. The velocity of a packet dropped from it on the earth's surface will be
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
A police jeep is chasing with velocity $45 km/hr$ a thief in another jeep moving with velocity $153\;km/hr$. The police fires a bullet with muzzle velocity 0f $180\; m/s$. The velocity with which it will strike the car of the thief is
jeemain
physics
class11
ch3
kinematics
motion-in-a-straight-line
speed-and-velocity
easy
asked
Jul 3, 2013
by
meena.p
1
answer
A stone is dropped from top of a tower when it crosses a point 5 m below the top, another stone is let fall from a point 25 m below the top. Both stones reach the bottom of tower simultaneously. The height of tower is $(g=10 m/s^2)$
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
medium
asked
Jul 2, 2013
by
meena.p
1
answer
Two diamonds begin a free fall from rest from same height $1.0 \; sec$ apart How long after will the two diamonds be 10 m apart ? $(g=10 m/s)$
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
medium
asked
Jul 2, 2013
by
meena.p
1
answer
Two trains each having speed $30 km/hr$ are leading towards each other on the same straight track. A bird can fly at $ 60 km/hr$ flies off one train when they are $60 km$ apart and heads directly for the other train. On reaching other train it files directly back to first and so on. How many trips can the bird fly from one train to another before the trains crash?
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
relative-velocity
difficult
asked
Jul 2, 2013
by
meena.p
1
answer
A particle moves in the plane according to the law $x=kt$, $y=kt(1- \alpha t)$ where $k$ and $\alpha$ are positive constants, t is time. The particle trajectory $ y(x) $ is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 2, 2013
by
meena.p
1
answer
A rocket is fired vertically up from the ground with a resultant vertical acceleration of $10 m/s^2$. The fuel is finished in 1 minute. and it continuous to move up. What is the maximum height reached?
jeemain
physics
class11
unit2
kinematics
motion-in-a-straight-line
kinematic-equation-for-accelerated-motion
medium
asked
Jul 2, 2013
by
meena.p
1
answer
A partical A is projected with an initial velocity of $60 m/s$ at an angle $30 ^{\circ}$ to horizontal . At the same time a second particle B is projected in the opposite direction with initial speed of $50 m/s$ from a point at a distance of $100 m$ from A. If the particle collide in mid air. find the angle of projection $\alpha$ of particle B.$(g=10 m/s^2)$
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 2, 2013
by
meena.p
1
answer
A body is thrown horizontally from top of a tower and strikes the ground after three seconds at an angle $45^{\circ}$ with horizontal. Find the height of the tower and initial speed of body.
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 2, 2013
by
meena.p
1
answer
There are two angles of projection for which the horizontal range is same. The sum of maximum heights for these two angles is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 2, 2013
by
meena.p
1
answer
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