A 10kg ball is fired at a velocity of 500m/s from a 1,000kg cannon. What is the recoil velocity of the cannon?

Newton's law of universal gravitation states that the force f between two masses, m1 and m2, is given below, where g is a constant and d is the distance between the masses. find an equation that gives an instantaneous rate of change of f with respect to d. (assume m1 and m2 represent moving points.)

Why do electron microscopes have higher resolving power than light microscopes?

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?