Author Question: A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same ... (Read 116 times)

Ebrown · **on:** Jul 29, 2018

A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same amount of time. Compared with the force that stops the car, the force needed to stop the truck is

A) greater.
B) smaller.
C) the same.

Question 2

A tiny gun made of a strong but very light material fires a bullet more massive than the gun itself. For such a weapon

A) the target would be safer than the shooter.
B) recoil problems would be lessened.
C) conservation of energy would not hold.
D) conservation of momentum would not hold.
E) both conservation of energy and momentum would not hold.