A stone dropped from the top of the tower touches the ground in 4 sec. The height of the tower is about 

(1) 80 m

(2) 40 m

(3) 20 m

(4) 160 m

Subtopic:  Uniformly Accelerated Motion |
 86%
From NCERT
PMT - 1997
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A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ball after time t/2 sec 

(1) At h/2 from the ground

(2) At h/4 from the ground

(3) Depends upon mass and volume of the body

(4) At 3h/4 from the ground

Subtopic:  Uniformly Accelerated Motion |
 64%
From NCERT
PMT - 2004
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A particle is projected up with an initial velocity of 80ft/sec. The ball will be at a height of 96ft from the ground after (Given g= 32 ft/s2 )

(1) 2.0 and 3.0 sec

(2) Only at 3.0 sec

(3) Only at 2.0 sec

(4) After 1 and 2 sec

Subtopic:  Uniformly Accelerated Motion |
 65%
From NCERT
PMT - 1985
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A body falls from rest, its velocity at the end of first second is (g=32ft/sec2) 

(1) 16  ft/sec

(2) 32  ft/sec

(3) 64  ft/sec

(4) 24  ft/sec 

Subtopic:  Uniformly Accelerated Motion |
 78%
From NCERT
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A stone thrown upward with a speed u from the top of the tower reaches the ground with a velocity 3u. The height of the tower is  

(1) 3u2/g

(2) 4u2/g

(3) 6u2/g

(4) 9u2/g

Subtopic:  Uniformly Accelerated Motion |
 80%
From NCERT
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Two stones of different masses are dropped simultaneously from the top of a building 

(1) Smaller stone hit the ground earlier

(2) Larger stone hit the ground earlier

(3) Both stones reach the ground simultaneously

(4) Which of the stones reach the ground earlier depends on the composition of the stone

Subtopic:  Uniformly Accelerated Motion |
 87%
From NCERT
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A body was thrown up with an initial speed of 96ft/sec reaches the ground after: (g=32ft/sec2) 

(1) 3 sec

(2) 6 sec

(3) 12 sec

(4) 8 sec

Subtopic:  Uniformly Accelerated Motion |
 72%
From NCERT
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A stone is dropped from a certain height which can reach the ground in 5 second. If the stone is stopped after 3 second of its fall and then allowed to fall again, then the time taken by the stone to reach the ground for the remaining distance is 

(1) 2 sec

(2) 3 sec

(3) 4 sec

(4) None of these

Subtopic:  Uniformly Accelerated Motion |
 68%
From NCERT
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A man in a balloon rising vertically with an acceleration of 4.9m/sec2 releases a ball 2 sec after the balloon is let go from the ground. The greatest height above the ground reached by the ball is (g=9.8m/sec2)  

(1) 14.7 m

(2) 19.6 m

(3) 9.8 m

(4) 24.5 m

Subtopic:  Uniformly Accelerated Motion |
From NCERT
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A particle is dropped under gravity from rest from a height h(g=9.8m/sec2) and it travels a distance 9h/25 in the last second, the height h is

(1) 100 m

(2) 122.5 m

(3) 145 m

(4) 167.5 m

Subtopic:  Uniformly Accelerated Motion |
 84%
From NCERT
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