If the speed of a moving object is doubled, which quantity associated with the object must also be doubled?
Its momentum
its kinetic energy
its acceleration
its gravitational potential energy
If a net force of 10. Newtons acts on a 6.0- kilogram mass for 8.0 seconds, the total change of the momentum of the mass is
48 kgm/s
60 kgm/s
80. kgm/s
480 kgm/s
A 5.0 newton force impacts an impulse of 15 Newton-seconds to an object. The force acted on the object for a period of
0.33 s
20. s
3.0 s
75 s
A 2.0-kilogram ball traveling north at 4.0 meters per second collides head on with a 1.0-kilogram ball traveling south at 8.0 meters per second. What is the magnitude of the total momentum of the two balls after collision?