A75 kg football player is gliding forward across very smooth ice at 4.6 m/s. he throws a 0.47 kg football straight forward. a) what is the player's speed afterward if the ball is thrown at 15 m/s relative to the ground? b) what is the player's speed afterward if the ball is thrown at 15 m/s relative to the player?

Astate of matter all that has define volume and can flow is a(n)

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.