Amy filled a balloon with air. She tightly tied the balloon so no air could get in or out. She kept the balloon in a warm room. An hour later she put the balloon in a cold freezer. When she took the balloon out 30 minutes later, it was still tied tightly shut. No air escaped from the balloon; however, the balloon had shrunk. Amy wondered if the mass of the balloon (including the air inside it) also changed. Mark the answer that best matches your thinking. A. The mass of the warm balloon is less than the mass of the cold balloon
B. The mass of the warm balloon is greater than the mass of the cold balloon
C. The mass of the warm balloon is the same as the mass of the cold balloon

When using the scientist method, which step comes last?

Ajoint produces movement when its angle decreases. which type of movement is it?

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.