A baseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8.0 * 10-3 seconds. The ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the force?

From Newton's second law of motion, force is the product of mass and acceleration. In this item, we are not straightforwardly given the acceleration. To solve for it,

acceleration = (Vf - Vo) / t

= (50 m/s - 40 m/s) / (0.008 s) = 1250 m/s²

Using the equation for force,

Force = (0.15 kg) (1250 m/s²) = 187.5 kg m/s² = 187.5 N