A ball was thrown by a boy a at angle `60^(@)` with horizontal at height 1 m from ground. Boy B is running in the plane of motion of ball and catches the ball at height 1 m from ground. He finds the ball falling vertically. If the boy is running at a speed 20 km/hr. Then the velocity of projection of ball is-

A man thrown a ball making an angle of 60^(@) with the horizontal.He runs on a level ground with constant velocity and catches the ball at the same horizontal level as it was thrown.If he had thrown the ball with speed 4m/s, then speed of running must be ?(in m/s)

A boy throws a ball with a velocity u at an angle theta with the horizontal. At the same instant he starts running with uniform velocity to catch the ball before it hits the ground. To achieve this he should run with a velocity of

A boy throws a ball with a velocity u at an angle theta with the horizontal. At the same instant he starts running with uniform velocity to catch the ball before it hits the ground. To achieve this he should run with a velocity of

A ball is thrown vertically upwards with a velocity of 20ms^-1 from the top of a multistorey building. The height of the point from where the ball is thrown is 25.0 m from the ground. How high will the ball rise?

A ball is thrown upwards at an angle of 60^(@) to the horizontal. It falls on the ground at a distance of 90 m . If the ball is thrown with the same initial velocity at an angle 30^(@) , it will fall on the ground at a distance of

A boy sitting at the rear end of a railway compartment of a train, running at a constant acceleration on horizontal rails throws towards the fore end of the compartment with a muzzle velocity of 20m/sec at an angle 37^(@) above the horizontal, when the train is running at a speed of 10 m/sec. If the same boy catches the ball without moving from his seat and at the same height of projection,find the speed of the train at the instant of his catching the ball.

A boy throws a ball in air at 60^@ to the horizontal along a road with a speed of 10 m/s (36km/h). Another boy sitting in a passing by car observer the ball. Sketch the motion of the ball as observed by the boy in the car,if car has a speed of (18km/h). Give explanation to support your diagram.