PLEASE HELP QUICK Jose does push-ups by applying a force to elevate his body 0.5 m off the ground. He does 50 J of work. If Jose does his push-up in two seconds, what is his power?

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

How can waves travel through ground?