Chapter 7 - Newton's laws of motion and momentum Flashcards
1
Q
what does it mean if an object is in equilibrium
A
it isn’t accelerating or the reusltant force is zero
2
Q
which of newtons laws states that every action has an equal and opposite action
A
3rd law
3
Q
what is newtons second law
A
f = ma
4
Q
what is newtons first law
A
an object in motion will remain in motion unless a resultant force acts upon it
5
Q
momentum equation
A
momentum = mass x velocity
6
Q
what can the rate of change of momentum also be described as
A
impulse
7
Q
what is impulse
A
the change in momentum
8
Q
what does the area under a force-time graph represent
A
impulse / the change in momentum
9
Q
principle of conservation of momentum
A
total momentum before a collision is equal to the total momentum after a collision
