Question

A system of particles is known to have a total KE of zero. What can you say about the total momentum of the system?

a) momentum of the system is positive

b) momentum of the system is negative     

c) momentum of the system is zero

d) you cannot say anything

A system of particles is known to have a total momentum of zero. What can you say about the total KE of the system?

a) is it is necessarily zero

b) it is necessarily positive    

c) it could be positive or zero

Two objects are known to have the same momentum. Do these two objects necessarily have the same KE?

a) yes
b) no    

A small car and a large truck collide head-on and stick together. Which one has the larger momentum change?

a) the car

b) the truck   

c) they both have the same magnitude of momentum change

d) cannot tell without knowing the final velocities

Two boxes, one heavier than the other, are initially at rest on a horizontal frictionless surface. The same constant force F acts on each one for exactly 1 second. Which box has more momentum after the force acts?

a) the heavier box
b) the lighter box     

c) both have the same

d) it is impossible to say

Answer 1