A boby is moving in a room with a velocity of `20m//s` perpendicular to the two walls separated by 5 meters .There is no friction and the collisionnn with the walls are elastic.

A body is moving in a room with velocity 20 m"/"s perpendicular to the walls separated by 5 meter. There is no friction and collision with walls is elastic. The motion of body……….

0A body of mass 20 kg moving with a velocity of 3 m//s, rebounds on a wall with same velocity. The impulse on the body is -

Two particles A and B separated by 10 m at time t = 0 are moving uniformly. A is moving along line AB at a constant velocity of 4 m//s and B is moving perpendicular to the velocity of A at a constant velocity of 5 m//s . After what time the two particles will be nearest to each other?

A wall moving with velocity 2 cms^(-1) towards the ball and ball is moving towards the wall with a velocity 10 cms^(-1) . It hits the wall normally and makes elastic collision with wall. The velocity of ball after collision with wall in cms^(-1) .

A bead of mass m and diameter d is sliding back and forth with velocity v on a wire held between two right walls of length L. Assume that th ecollisions with the wall are perfectly elastic and ther is no friction. The average force that the bouncing bead exerts on the one of the walls is :_

A bead of mass m and diameter d is sliding back and forth with velocity v on a wire held between two right walls of length L. Assume that th ecollisions with the wall are perfectly elastic and ther is no friction. The average force that the bouncing bead exerts on the one of the walls is :_

A bead of mass m and diameter d is sliding back and forth with velocity v on a wire held between two right walls of length L. Assume that th ecollisions with the wall are perfectly elastic and ther is no friction. The average force that the bouncing bead exerts on the one of the walls is :_

An engine driver moving towards a wall with a velocity of 60 m//s emits a note of 1400 Hz. Speed of sound in air is 340 m//s . The frequency of the note after reflection from the wall as heard by the engine driver is