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Recent questions and answers in Motion in a Straight Line

Questions >> JEEMAIN and NEET >> Physics >> Class11 >> Motion in a Straight Line

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

answered May 7, 2020 by priyanka.clay6

1 answer

The position x of a particle varies with time as $x=at^2-bt^3$. The acceleration of the particle will be zero at time t equal to

answered May 7, 2020 by priyanka.clay6

1 answer

A Car is able to stop with a uniform retardation of $8 ms^{-2} $ and the driver of the car can react to an emergency in 0.6 s. Calculate overall stopping distance of the car if the speed of car is $72 \;km\;h^{-1}$

answered May 7, 2020 by priyanka.clay6

1 answer

An electron starting from rest has a velocity that increases linearly with time i.e $v= kt$ where $k=2\;m\;s^{-2}$. The distance covered in the first 3 second is

answered May 7, 2020 by priyanka.clay6

1 answer

A body moving in a straight line covers a distance of $14 m $ in the 5th second and 20 m in the 8th second. How much distance will it cover in the 15th second ?

answered May 7, 2020 by priyanka.clay6

1 answer

A total of $ \$10000$ is distributed among $150$person as gift. A gift is either of $ \$50$ or $ \$100$ . Find the number of gifts of each type.

answered May 7, 2020 by priyanka.clay6

1 answer

A 150 m long train is moving with uniform velocity of 45 km/h. The time taken by train to cross the bridge of length 850 m is ?

answered May 7, 2020 by priyanka.clay6

1 answer

A body covers a certain distance x in equal thirds - the first third of distance with speed v$_1$, the second third with a speed of v$_2$ and the last third with a speed of v$_3$. What is the average speed of the body over time?

answered Apr 16, 2018 by ushapattima

2 answers

From the top of a building 40 m tall, a ball a thrown vertically upwards with a velocity of $10\; ms^{-1}$ After how long will the ball hit the ground?

answered Aug 13, 2017 by sl0224422

2 answers

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 ?

answered Jan 29, 2017 by suchala2002

3 answers

Dhoni throws his bat vertically upwards with an initial velocity of $26.2\;m/s$ Determine the height to which the bat will rise above its initial height.

answered Aug 14, 2016 by donkadasnd

2 answers

A feather is dropped on the moon from a height of $1.40\; meters$. The acceleration of gravity on the moon is $1.67 m/s^2$. Determine the time for the feather to fall to the surface of the moon

answered Aug 20, 2014 by meena.p

1 answer

Raju drops a pile of marbles from the top of a roof located $8.52\;m$ above the ground. Determine the time required for the marbles to reach the ground .

answered Aug 19, 2014 by meena.p

1 answer

A body moving in a straight line covers a distance of $14 m $ in the 5th second and 20 m in the 8th second. How much distance will it cover in the 15th second ?

answered Aug 19, 2014 by meena.p

1 answer

A marble rolls across a flat surface. Its initial speed is 41 m/s but it comes to rest after 10 seconds . Find the acceleration of the marble and the distance traveled by the marble as it comes to rest.

answered Aug 19, 2014 by meena.p

1 answer

A car acceleration from rest at a constant rate $\alpha$ for some time after which it decelerates at a constant rate $\beta$ to come to rest. If t is the total time elapsed , then the maximum velocity attained by the car is

answered Aug 19, 2014 by meena.p

1 answer

An electron starting from rest has a velocity that increases linearly with time i.e $v= kt$ where $k=2\;m\;s^{-2}$. The distance covered in the first 3 second is

answered Aug 19, 2014 by meena.p

1 answer

A steel ball is bouncing up and down on a steel plate with a period of oscillation of 1 second. If $g= 10\;ms^{-2}$, then if bounces up to a height of

answered Aug 19, 2014 by meena.p

1 answer

A body travelling with uniform acceleration crosses two points A and B with velocities $20\;ms^{-1}$ and $30 \;ms^{-1}$ respectively . The speed of the body at the mid-point of A and B is

answered Aug 19, 2014 by meena.p

1 answer

A bus starts from rest with an acceleration of $ 1\;ms^{-2}$ A man who is $48\;m$ behind the bus starts with a uniform velocity of $ 10\;ms^{-1}$. The minimum time after which the man will catch the bus is

answered Aug 19, 2014 by meena.p

1 answer

A stone is allowed to fall from the top of tower 100 metre high and at the same time another stone is projected vertically upwards from the ground with a velocity of $25\;ms^{-1} $. The two stones will meets after

answered Aug 19, 2014 by meena.p

1 answer

The distance through which a body falls in the nth seconds is h. The distance through which it falls in the next seconds is

answered Aug 19, 2014 by meena.p

1 answer

A stone is thrown upwards with velocity v. At half the height, its velocity is

answered Aug 14, 2014 by meena.p

1 answer

A ball is thrown vertically upwards from the top of a tower of height h with velocity v. The ball strikes the ground after

answered Aug 14, 2014 by meena.p

1 answer

A small block slides without friction down an inclined plane starting from rest. Let $S_n$ be the distance travelled from time $t- n-1$ to $t=n$. Then $\large\frac{S_n}{S_{n_1}}$ is

answered Aug 14, 2014 by meena.p

1 answer

A car travelling on a straight road at $15.0$ meter per second accelerates uniformly to a speed of $21.0$ meters per second in $12.0 \;second$. The total distance traveled by the car in this $12.0 $ second time interval is

answered Aug 14, 2014 by meena.p

1 answer

An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls $6.0 $ meters vertically in $2.7 \;seconds$, what is its acceleration ?

answered Aug 14, 2014 by meena.p

1 answer

A dart is thrown at a target that is supported by a wooden backstop. It strikes the backstop with an initial velocity of $350\;m/s$ The dart comes to rest in $0.0050\;s$ What is the acceleration of the dart ?

answered Aug 14, 2014 by meena.p

1 answer

A sailboat acceleration uniformly from $6.0\;m/s$ to $ 8.0 [N]$ at a rate of $0.50\;m/s^2$. What distance does the boat travel ?

answered Aug 14, 2014 by meena.p

1 answer

A sports car approaches a highway on-ramp at a velocity of $20.0\;m/s $ . If the car accelerates at a rate of $3.2 \;m/s^2 $ for $5.0\;s$ , What is the displacement of the car ?

answered Aug 13, 2014 by meena.p

1 answer

A car is moving at a speed $50 \;km /h$ two seconds there it is moving at $60 \;km/h$ Calculate the acceleration of the car.

answered Aug 13, 2014 by meena.p

1 answer

A car starts from rest , moves with an acceleration $a$ and then decelerates at $b$ for some time to come to rest. If the total time taken is t, the maximum velocity is

answered Aug 13, 2014 by meena.p

1 answer

A car staring from rest acceleration at the rate $f$ through a distance $S$, then continues at constant speed for time $t$ and then decelerates at rate $\large\frac{f}{2}$ to come to rest. If the total distance covered is $15\;s$ , then

answered Aug 13, 2014 by meena.p

1 answer

The relation between time t and distance $x$ is $t= ax^2+bx$ where a and b are constants . The acceleration is

answered Aug 13, 2014 by meena.p

1 answer

The position of a particle as a function of time is given by equation: $x =2t^3-6t^2+12t+6$. The acceleration of the body is zero at

answered Aug 13, 2014 by meena.p

1 answer

The position of a particle moving along the $x$-axis ($x$ is in $m$) is given by $x = t^3 - 3t^2 + 2t$. Find the average speed of the particle in the interval $t=2\;s \rightarrow t = 4\;s$

answered Aug 12, 2014 by balaji.thirumalai

1 answer

The position of a particle moving along the $x$-axis ($x$ is in $m$) is given by $x = t^3 - 3t^2 + 2t$. Find the velocity of the particle at $t=2\;s$.

answered Aug 12, 2014 by balaji.thirumalai

1 answer

A body travels first half a distance with velocity v$_0$. The remaining distance was covered with velocity v$_1$ for half the time and v$_2$ for the remaining time. Find the average velocity over the whole time of motion?

answered Aug 11, 2014 by balaji.thirumalai

1 answer

Consider the following one-dimensional motion. A ball thrown directly upward rises to a highest point and falls back into the thrower’s hand. Which of the following statements are true?

answered Aug 11, 2014 by balaji.thirumalai

1 answer

Consider the following one-dimensional motion.A spacecraft drifts through space at constant velocity. Which of the following statements are true?

answered Aug 11, 2014 by balaji.thirumalai

1 answer

Consider the following one-dimensional motion. A race car starts from rest and speeds up to 100 m/s. Which of the following statements are true?

answered Aug 11, 2014 by balaji.thirumalai

1 answer

A ball is dropped from the roof of a building . An observer notes that the ball takes $0.1$ s to cross over a window 1 m in height . After crossing the window , the ball takes another 1.00 s to come to the bottom of the building . What is height of the building and how high is the window. Take $g=10 ms^{-2}$

answered Jul 25, 2014 by meena.p

1 answer

A body X is dropped from a vertical height of 200 m. Exactly at the same instant another body -Y is projected vertically upwards with a velocity of $100 ms^{-1}$. When and where the two bodies X and Y meet?

answered Jul 25, 2014 by meena.p

1 answer

Drops are falling at regular intervals of time from the roof of a building 16 m high. If the first drop reaches the ground at the instant the fifth drop start falling, find the heights of the various drops at the instant the first drop reaches the ground ?

answered Jul 25, 2014 by meena.p

1 answer

A juggler is maintaining four balls in motion, making each in turn to rise to height of 20 m.Where will other three balls be at the instant, When one is just leaving his hand? $g= 10ms^{-2}$

answered Jul 25, 2014 by meena.p

1 answer

A juggler is maintaining four balls in motion, making each in turn to rise to height of 20 m. With what velocity does he project them ?

asked Jul 25, 2014 by meena.p

1 answer

A body is projected vertically upward with a velocity $20 ms^{-1}$ . Find the distance travelled by it in 3 s. Take $g=10ms^{-2}$.

asked Jul 25, 2014 by meena.p

1 answer

A particle is projected vertically up and it reaches a 15 cm high mark at certain instant. After 4 seconds from this instant the particle crosses this mark again in its downward journey. What is the initial velocity of projection of this particle? $(g= 10 ms^{-2})$

asked Jul 25, 2014 by meena.p

1 answer

A body travels 2 m in the first two seconds and $2.2 \;m$ in the next four seconds. What will be its velocity at the end of the seventh second from the start, if acceleration is constant .

asked Jul 18, 2014 by meena.p

1 answer

A Car is able to stop with a uniform retardation of $8 ms^{-2} $ and the driver of the car can react to an emergency in 0.6 s. Calculate overall stopping distance of the car if the speed of car is $72 \;km\;h^{-1}$

asked Jul 18, 2014 by meena.p

1 answer

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