Recent questions tagged easy

A man of weight 1 mg is moving up in a rocket with an acceleration 4g. The apparent weight of the man in the rocket is

asked Jul 4, 2013 by meena.p

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If the tension in the cable of $1000 \;kg$ elevator is $1000\;kg$ weight, the elevator

asked Jul 4, 2013 by meena.p

1 answer

A car is moving with uniform velocity on a rough horizontal road.Then according to Newton's first law of motion

asked Jul 4, 2013 by meena.p

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If the conjugate of a complex number is $\large\frac{1}{i-1},$ then the complex number is?

asked Jul 3, 2013 by rvidyagovindarajan_1

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

asked Jul 3, 2013 by meena.p

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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

asked Jul 3, 2013 by meena.p

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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

asked Jul 3, 2013 by meena.p

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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

asked Jul 3, 2013 by meena.p

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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

asked Jul 3, 2013 by meena.p

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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

asked Jul 3, 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

asked Jul 2, 2013 by meena.p

1 answer

A pendulum is released from $\theta_0=60 ^{\circ}$. The rate of change of speed of bob at $\theta=30 ^{\circ}$ is $(g=10 m/s^2)$

asked Jul 1, 2013 by meena.p

1 answer

A particle is released from rest from a tower of height 3h, the ratio of time of fall for equal heights h ie $t_1:t_2:t_3$ is

asked Jul 1, 2013 by meena.p

1 answer

A particle is projected up an inclined plane with initial speed $v=20 m/s$ at an angle $\theta=30 ^{\circ}$, with the plane. The component of its velocity perpendicular to plane when it strikes the plane is

asked Jul 1, 2013 by meena.p

1 answer

There are two values of time for which a projectile is at same height. The sum of these two times is

asked Jul 1, 2013 by meena.p

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The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of acceleration of the body is

asked Jun 28, 2013 by meena.p

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A man moves along x axis such that velocity $v=\large\frac{1}{x}$. If he is initially at $x=2 m$ find the time when he reaches $x=4m$

asked Jun 28, 2013 by meena.p

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Average velocity of a particle moving in a straight line, with constant acceleration a, initial velocity u, time t is

asked Jun 27, 2013 by meena.p

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A ball is dropped from a certain height on a horizontal floor. The coefficient of restitution between ball and floor is $\large\frac{1}{2}$. The displacement time graph of the ball is

asked Jun 25, 2013 by meena.p

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A car travelling with a speed of 60 km/hr can brake to stop within a distance of 20m. If the car is going twice as fast, the stopping distance will be ?

asked Jun 24, 2013 by meena.p

1 answer

The velocity-time graph of a moving body is shown in figure. The ratio of acceleration during interval OB and BC is

asked Jun 24, 2013 by meena.p

1 answer

Two boys are standing at ends A and B of a ground where AB=a. The boy at B starts running in a direction perpendicular to AB with a velocity v$_1$. The boy at A starts running simultaneously with velocity v and catches the other boy in a boy in a time t. Calculate t in terms of a, v and v$_1$.

asked Jun 21, 2013 by meena.p

1 answer

A block of mass 10kg is dropped from top of a cliff 100m high at same time a bullet of mass 10g is fired vertically upward with velocity of 100m/s. after how much time will they meet ?

asked Jun 21, 2013 by meena.p

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A plane is flying horizontally at an attitude of 490 m with a velocity of 80 m/s. A bomb is dropped from it. After how much time does the bomb reach the ground ?

asked Jun 21, 2013 by meena.p

1 answer

A stone is dropped from a $25^{th}$ storey of a multistoreyed building. and it reaches the ground in $5\; sec$. How many storeys does it pass through in the 1st second ? ( g = 9.8m/s )

asked Jun 21, 2013 by meena.p

1 answer

A balloon is rising steadily at 5m/s. when it reaches a height of 30 m, a stone is dropped from it. After how much time will the stone reach the ground ?

asked Jun 21, 2013 by meena.p

1 answer

A ball is thrown upward from a bridge with an initial velocity of 4.9 m/s. It strikes water after 2s. If $g=9.8 m/s^2$ What is the height of the bridge ?

asked Jun 20, 2013 by meena.p

1 answer

A particle moves along a semicircle of radius 10 m in 5 seconds. The average velocity of the particle in m/s is?

asked Jun 20, 2013 by meena.p

1 answer

The correct statement from the following is

asked Jun 20, 2013 by meena.p

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A ball is thrown vertically upwards from ground and a student gazing out of window sees it moving upward past him at 5 m/s. The window is 10 m above the ground.Find the maximum height of the ball.

asked Jun 20, 2013 by meena.p

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A body is moving along a straight line with a constant acceleration and has velocities 6m/s and 8 m/s at points A and B of its path. Find the velocity at mid point of AB

asked Jun 20, 2013 by meena.p

1 answer

Find the probability distribution of the number of successes in two tosses of a die, where a success is defined as six appears on at least one die

asked Jun 20, 2013 by balaji.thirumalai

1 answer

Find the probability distribution of the number of successes in two tosses of a die, where a success is defined as number greater than 4.

asked Jun 20, 2013 by balaji.thirumalai

1 answer