A0.145-kg baseball is pitched at 42 m/s. the batter hits it horizontally to the pitcher at 58 m/s. find the change in momentum of the ball.

Ain is , is 's of ? 0.62 0.79 1.27 1.50

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600

Explain how a step-down transformer makes electricity safe for use in homes