A particle of mass 150 g was projected at 13 m/s across a horizontal plane. It decelerated uniformly at 2 m/s2. Find the change in its kinetic energy in the first 4 seconds of motion.
A rubber ball of mass 125 g fell vertically from a height of 3.6 m. It hit the ground and rebounded vertically upward. Given that the change in the ball’s momentum as a result of the impact was g⋅cm/s, determine the change in its kinetic energy. Consider the acceleration due to gravity to be 9.8 m/s2.
A body of mass 500 g is moving at a constant velocity , where and are two perpendicular unit vectors. Find its kinetic energy.