A spring with a spring constant of 520 N/m hangs from the ceiling of a room. If a mass of 2.5 kg is placed on the end and the spring is allowed to stretch until it reaches static equilibrium, how far is the spring stretched from its equilibrium position? 5. If the spring and mass in problem 4 are placed horizontally on a flat, frictionless surface and one end of the spring is attached to a wall, how fast would the mass be traveling when it crossed the equilibrium position if it were displaced by 0.50 m from equilibrium and released from rest? What would the period of oscillation be?

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.