A boy stands at 39.2 m from a building and throws a ball which just passes through a window 19.6 m above the ground. Calculate the velocity of projection of the ball.

A body stans at 78.4 m from a building and throws a ball which just enters a window 39.2 m above the ground. Calculate the velocity of projection of the ball. Fig. 2 (d) . 22. .

A boy stands 19.6 m away from a 9.8m high cliff. If the throws a ball towards the cliff such that it just passes above from it , find the velocity of projection of the ball.

From the top of a building 80 m high, a ball is thrown horizontally which hits the ground at a distance.The line joining the top of the building to the point where it hits the ground makes an angle of 45^(@) with the ground. Initial velocity of projection of the ball is (g=10 m//s^(2))

A cricketer can throw a ball to a maximum horizontal distance of 100 m. How high above the ground can the cricketer throw the same ball ?

A circus artist maintains four balls in motion making each in turn to rise to a height of 5 m from hishand. Calculate the velocity with which he projects the balls. Where will the other three balls be at the instant when the fourth one is just leaving his hand ? Take g = 10m//s^(2)

Two tall buildings are 40m apart A ball thrown horizontally from a window 145m above the ground in one building is to enter a window 22.5m above the ground in the other building. The speed of the ball should be

A ball is thrown vertically upwards from the ground and a student gazing out of the window sees it moving upward past him at 10ms^-1. The window is at 15 m above the ground level. The velocity of ball 3 s after it was projected from the ground is [Take g= 10 ms^-2 ]

Two tall buildings are 40m apart. A ball thrown horizontally from a window 145m above the ground in one building is to enter a window 22.5m above the ground in the other building.The speed of the ball should be (A) 6m/s (B) 8m/s (C) 10m/s (D) 12m/s

Two rings are suspended from the points A and B on the ceiling of a room with the help of strings of length 1.2 m each as shown. The points A and B are separated from each other by a distance AB = 1.2 m. A boy standing on the floor throws a small ball so that it passes through the two rings whose diameter is slightly greater than the ball. At the moment when the boy throws the ball, his hand is at a height of 1.0 m above the floor. A stop watch which is switched on at the moment of throwing the ball reads 0.2 s when the ball passes through the first ring and 0.6 s when it passes through the second ring. The angle of projection of the ball is:

Two rings are suspended from the points A and B on the ceiling of a room with the help of strings of length 1.2 m each as shown. The points A and B are separated from each other by a distance AB = 1.2 m. A boy standing on the floor throws a small ball so that it passes through the two rings whose diameter is slightly greater than the ball. At the moment when the boy throws the ball, his hand is at a height of 1.0 m above the floor. A stop watch which is switched on at the moment of throwing the ball reads 0.2 s when the ball passes through the first ring and 0.6 s when it passes through the second ring. The projection speed of the ball is: