chapter 3 ML&M Flashcards
1
Q
the change in momentum of an object is equal to the
A
impulse that acts on it
2
Q
the conservation of momentum is most closely related to newton’s
A
3rd law
3
Q
whereas impulse involves the time that a force acts, work involves the
A
distance that a force acts
4
Q
if you push for an hour against a stationary wall, you do not work
A
on the wall
5
Q
when you push an object a certain distance while applying twice the force, you do
A
twice as much work
6
Q
an object may have potential energy because of its
A
location
7
Q
a ball rolling down an incline has its maximum potential energy at
A
the top
8
Q
a pulley system can
A
multiply a force and change the direction of a force
9
Q
when a simple machine multiplies force, it decreases
A
distance moved
