Q. A body is released from the top of a tower of height H m. After 2s it is stopped and then instantaneously released. What will be its height after next 2s (in metres)?

(a) H-5

(b) H-10

(c) H-20

(d) H-40

Ans: (d)

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# Tag: Kinematics

## A body is released from the top of a tower of height H . After 2s it is stopped and then instantaneously released…..

## A body is thrown vertically upward from a point ‘A’ 125m above the ground. It goes up to a maximum height of 250 m above…..

## A boy throws n balls per second at regular time intervals. When the first ball reaches the maximum height he throws …..

## A ball is projected vertically upwards with a velocity of 25 ms-1 from the bottom of a tower. A boy who is standing at the top…..

## A ball is dropped from the top of a building. The ball takes 0.5s to fall past the 3m length of a window at certain distance…..

Q. A body is thrown vertically upward from a point ‘A’ 125m above the ground. It goes up to a maximum height of 250 m above the ground and passes through ‘A’ on its downward journey. The velocity of the body when it is at a height of 70m above the ground is (g = 10 m/s^{2})

(a) 20 m/s

(b) 50 m/s

(c) 60 m/s

(d) 80 m/s

Ans:(b)

Q. A ball is projected vertically upwards with a velocity of 25 ms^{-1 }from the bottom of a tower. A boy who is standing at the top of a tower is unable to catch the ball when it passes him in the upward direction. But the ball again reaches him after 3 sec when it is falling. Now the boy catches it Then the height of the tower is (g = 10 ms^{-2})

(a) 5 m

(b) 10 m

(c) 15 m

(d) 20 m

Ans: (d)

Q. A ball is dropped from the top of a building. The ball takes 0.5s to fall past the 3m length of a window at certain distance from the top of the building. Speed of the ball as it crosses the top edge of the window is (g = 10 m/s^{2})

(a) 3.5 ms^{-1}

(b) 8.5 ms^{-1}

(c) 5 ms^{-1}

(d) 12 ms^{-1}

Ans: (a)