If a spaceship has a momentum of 30,000 kg-m/s to the right and a mass of 400 kg, what is the magnitude of its velocity?
A. 12,000,000 kg-m/s
B. 75 m/s
C. 1,200 kg-m/s
D. 300 m/s

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply