Home
Class 12
PHYSICS
From the top of a tower of height 200 m,...

From the top of a tower of height 200 m, a ball A is projected up with speed `10ms^(-1)` and 2 s later, another ball B is projected vertically down with the same speed. Then

A

Both A and B will reach the ground simultaneously

B

Ball A will hit the ground 2s later than B hitting the ground

C

Both the balls will hit the ground with the same velocity

D

Both the balls will hit the ground with different velocity

Text Solution

Verified by Experts

The correct Answer is:
A, C
Ball A will return to the top of tower after ` T=( 2u)/(g) =(2xx 10 )/( 10 ) 2s ` with speed of `10 ms^(-1) ` downward.And this time, B is also projected downwards with ` 10 ms^(-1) ` so both reach ground simultaneously. Also they will hit the ground with the same speed..
Promotional Banner

Similar Questions

Explore conceptually related problems

From the top of a tower of height 200 m , a ball A is projected up with 10 m s^(-1) . And 2 s later another ball B is projected verticall down with the same speed. Then .

From the top of a tower of height 40m, a ball is projected upward with a speed of 20ms^(-1) at an angle of elevation of 30^(@) . Then the ratio of the total time taken by the ball to hit the ground to the time taken to ball come at same level as top of tower.

A ball is projected vertically up with speed 20 m/s. Take g=10m//s^(2)

Form the top of a tower 100 m in height a ball is dropped and at the same time another ball is projected vertically upwards from the ground with a velcoity of 25 ms^(-1) . Find when and where the two balls will meet.

[" From the top of a tower one "],[" body projected up with "],[" some speed reaches ground "],[" in "9" seconds,another body "],[" projected down with same "],[" speed reaches ground in "4],[" seconds.If another body is "],[" dropped from the same "],[" point,time taken to reach "],[" ground is "]

A ball is projected downward from the top of a cliff of height h with an initial speed v.Another ball is simultaneously projected vertically up from the bottommost of the cliff with the same speed.When do they meet?

From the top of the tower of height 400 m , a ball is dropped by a man, simultaneously from the base of the tower, another ball is thrown up with a velocity 50 m//s . At what distance will they meet from the base of the tower ?