Momentum

Question 1

Momentum eq

Answer 1

Mass x velocity and a direction

p = mv

Question 2

Momentum unit

Answer 2

kgm/s

Question 3

Momentum scalar or vector?

Answer 3

Vector. If it is going the other way (backwards), it is negative

Question 4

Conservation of momentum

Answer 4

Total momentum before = total momentum after

Question 5

Force (fixed change in momentum)

Answer 5

change in momentum / time

F = mv-mu / t

Question 6

By increasing the time taken in a collision

Answer 6

It decreasing the rate of change of momentum
Decreases the force
Less damage done
Energy transferred is over a longer distance

Question 7

Displacement

Answer 7

Distance travelled in a certain direction. Vector

Question 8

Velocity

Answer 8

Speed in a certain direction

Rate of change of displacement

Question 9

Acceleration

Answer 9

Rate of change of velocity (change of velocity over time)
Changes if speeding up, slowing down or changing direction
m/s^2

Question 10

v^2 - u^2 = 2ax

Answer 10

x = displacement