Find the kinetic energy of a body of mass 4 kg moving at 36 m/s. Express your answer in ergs.
A body of mass 28 kg was moving at 28 m/s when a force started acting on it. As a result, its speed became 7 m/s. Find the change in kinetic energy of the body. Take .
Given that the kinetic energy of a moving bullet of mass kg, at a certain instant, was 7 000 joules, determine its speed.
A cannon fired a shell of mass 16 kg at 285 m/s towards a tank that was moving at 72 km/h in a straight line directly towards the cannon. Determine the kinetic energy of the shell relative to the motion of the tank.
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.