Two spacemen are floating together with zero speed in a gravity-free region of space. The mass of spaceman `A` is 120 kg and that of spaceman `B` is 90 kg. Spacenab `A` pushes `B` away from him with `B` attaining a final speed of `0.5m//s`. Find the final reciol speed of `A`?.

Two spacemen A and B are floating is gravity free space with zero velocity relative to each other. "A" has a mass of 120 kg and "B" has a mass of 90kg which includes a 5 kg radio box. "B" throws the box towards "A" with a velocity of 2m/x and A catches it. The change in velocity of each one is

Two spacemen A and B are floating is gravity free space with zero velocity relative to each other. "A" has a mass of 120 kg and "B" has a mass of 90kg which includes a 5 kg radio box. "B" throws the box towards "A" with a velocity of 2m/x and A catches it. The change in velocity of each one is

A body of mass 2kg has an initial speed 5 m/s. A force acts as it for some time in the direction of motion. The force-time graph is shown in figure. Find the final speed of the body.

A boy moves a ball of mass 0.5 kg in horizontal surface with 20 m/s. It collides and moves with 5% of its initial kinetic energy. Find final speed

A 3.0-kg cart moving to the right with a speed of 1.0 m/s has a head-on collision with a 5.0-kg cart that is initially moving to the left with a speed of 2.0 m/s. After the collision, the 3.0-kg cart is moving to the left with a speed of 1.0 m/s. What is the final velocity of the 5.0-kg cart?

A 15.0 kg package is moving at a speed of 10.0 m/s vertically upward along a y axis when it explodes into three fragments: a 2.00 kg fragment is shot upward with an initial speed of 20.0 m/s and a 3.00 kg fragment is shot in the positive direction of a horizontal x axis with an initial speed of 5.00 m/s. Find (a) the speed of the third fragment right after the explosion and (b) the total kinetic energy provided by the explosion.