# P2 - Momentum and Collisions

• Formulas
• Masses
• Velocity
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What is momentum?
The greater the mass of an object and the greater its velocity, the more momentum it has.
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How do you calculate momentum?
Momentum (kg m/s) = Mass (kg) X Velocity (m/s)
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How do forces change momentum?
A larger force means a faster change in momentum.
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How do you calculate a force acting on a momentum?
Force acting (N) = Change in momentum (kg m/s) / Time taken for change to happen (s)
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When is momentum used?
In car collisions, cars are deigned to slow people down over a longer time when they have a crash so the force is lessened e.g. seatbelts stretch to lessen the impact.
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## Other cards in this set

### Card 2

#### Front

How do you calculate momentum?

#### Back

Momentum (kg m/s) = Mass (kg) X Velocity (m/s)

### Card 3

#### Front

How do forces change momentum?

### Card 4

#### Front

How do you calculate a force acting on a momentum?

### Card 5

#### Front

When is momentum used?