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Recent questions tagged motion-under-gravity

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

asked Aug 20, 2014 by meena.p

1 answer

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.

asked Aug 20, 2014 by meena.p

2 answers

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 .

asked Aug 19, 2014 by meena.p

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?

asked 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 $g=10 ms^{-2}$

asked 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?

asked 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? $g= 10ms^{-2}$

asked 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

If a ball is thrown vertically upwards with speed u, the distance covered during the last t second of its ascent is

asked Jul 18, 2014 by meena.p

1 answer

A particle is dropped vertically from rest from a certain height. Time taken by it to fall through successive distance of one metre each will be :

asked Jul 18, 2014 by meena.p

1 answer

A stone is thrown vertically up from the top of a tower with some initial velocity and it arrives on the ground after $t_1$ seconds. Now if the same the stone is thrown vertically down from the top of the same tower with the same initial velocity, it arrives on ground after $t_2$ seconds. In how much time will the stone take to reach the ground if it is dropped from the same tower?

asked Jul 17, 2014 by meena.p

1 answer

A particle is projected vertically upwards . It attains a height h after 2 seconds and again after 10 seconds . The speed of the particle at the height h is numerically equal to

asked Jul 17, 2014 by meena.p

1 answer

A body is projected vertically upwards. If $ t_1$ and $t_2$ be the times at which it is at height h above the point of projection while ascending and descending respectively. then h is,

asked Jul 17, 2014 by meena.p

1 answer

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