The only force acting on a 1.6 kg body as it moves along the x-axis. If the velocity of the body at x = 20 m is 50 m / s, what is its kinetic energy at x = 5.0 m?

The energy released by a nuclear fusion reaction is produced when

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)