Choose all that apply. light travels in transverse waves cannot travel through a vacuum slows down when traveling through denser substances speeds up when traveling through more dense substances can be absorbed and transformed into heat

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

As you lift an 88 n box straight upward you produce a power of 72 w. what is the speed of the box?