7.4 Impluse Flashcards
1
Q
Define the impulse of a force
A
The product of force and the time for which this force acts on an object
2
Q
State the relationship between impulse and momentum
A
Impulse = change of momentum
3
Q
What does the area under the line of a force-time graph represent
A
The impulse of the force / change in momentum of the object
4
Q
What does the area under a force-time graph represent
A
Impulse
5
Q
How is impulse calculated
A
The product of the force x the time for which the force acts
P = f x t
6
Q
Describe how the force - time graph for a car crash would be different if the car had a crumple zone
A
With a crumple zone the peak will be lower, the base of the curve would be wider and the area under the curve would be the same
