A moving object has a kinetic energy of 150J. what is the mass of the object if its momentum is 25kgm/s a.
None of the above

b.
2.08kg

c.
2.0kg

d.
4.17kg

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.

What object a collides with object b and bounces back its final momentum is?

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal