Author Question: If a net external force acts on a system, what will change? a. The sum of the momenta of all ... (Read 78 times)

Deast7027 · **on:** Jul 28, 2018

If a net external force acts on a system, what will change?
a. The sum of the momenta of all objects in the system.
b. The momentum of no more than one object in the system.
c. The sum of the magnitudes of each momentum.
d. The momentum of exactly one object in the system.
e. The momenta of all but one of the objects in the system.

Question 2

If the momentum of one object changes in a system that is subject to no net external force, what else must happen?
a. The momenta of the other objects in that system change in the same way.
b. The momenta of the other objects in that system change to cancel out the first change.
c. The momenta of the other objects in that system are not necessarily affected.
d. The momenta of the other objects in that system are necessarily not affected.
e. Collisions with other objects will change its momentum back.