Momentum (HT only) Flashcards
1
Q
State the law of conservation of momentum
A
In a closed system the total momentum before an event is equal to the total momentum after it
2
Q
state the equation that links mass, momentum and velocity
A
momentum = mass x velocity
3
Q
State the unit that momentum is measured in
A
kg m/s
4
Q
Describe how the Force acting on an object is related to its momentum
A
Force acting on an object equals the rate of change of momentum
5
Q
state the equation that links force, change in momentum and time
A
force = change in momentum / time
6
Q
State examples of safety features In cars which work by increasing the time taken for the change in momentum
A
Airbags seatbelts crumple zones
