A0.12-kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. what is the change in the magnitude of the momentum of the ball? a. 0.39 kg*m/s b. 0.42 kg*m/s c. 1.3 kg*m/s d. 2.4 kg*m/s

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.