# physics

HideShow resource information
What is the momentum equation?
momentum (kg m/s) = mass (kg) × velocity (m/s)
1 of 5
Can you name 2 things that momentum has and describe them?
magnitude - an amount because it depends on the object’s mass
2 of 5
What always happenes to momentum?
it is always conserved, this csn be used to work out the mass, velocity or momentum of an object in an explosion or collision.
3 of 5
Can you use momentum to describe safety features on a car?
seatbelts, they can stretch to increase the time taken for the body's momentum to reach zero. airbags, increase the time taken for the head's momentum to reach zero.
4 of 5
A bullet with a mass of 0.03 kg leaves a gun at 1000 m/s. If the gun’s mass is 1.5 kg, what is the velocity of the recoil on the gun?
momentum of bullet = mass × velocity, = 0.03 kg × 1,000 m/s. = 30 kg m/s
5 of 5

## Other cards in this set

### Card 2

#### Front

Can you name 2 things that momentum has and describe them?

#### Back

magnitude - an amount because it depends on the object’s mass

### Card 3

#### Front

What always happenes to momentum?

### Card 4

#### Front

Can you use momentum to describe safety features on a car?

### Card 5

#### Front

A bullet with a mass of 0.03 kg leaves a gun at 1000 m/s. If the gun’s mass is 1.5 kg, what is the velocity of the recoil on the gun?