# Momentum

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What is the equation for momentum?
Momentum = Mass X Velocity
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What is momentum measured in?
Kg m/s
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If an object has the greater mass or velocity what does this mean for the momentum?
The more momentum the object has.
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Is momentum a vector or scalar quatntity?
Vector. It has size and direction.
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What momentum does a 50kg cheetahs that is running at 60 m/s have?
50x60= 3000kg m/s
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a boy has a mass of 30kg and a momentum of 75kg m/s. Calculate his velocity.
75➗30= 2.5 m/s
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True or false, total momentum before = total momentum after
True
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What is a closed system?
Another way of saying no external forces act
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Calculate the momentum of a 60kg woman running at 3m/s
180 kg m/s
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CHANGES IN MOMENTUM
CHANGES IN MOMENTUM
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What do forces cause?
Changes in momentum
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What so the equation for force?
Force(N) = change in momentum(kg m/s) / time(s)
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Calculate the force a tennis racket needs to apply to a 58g tennis ball to accelerate it from rest to 34m/s in 11.6ms.
170N
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## Other cards in this set

### Card 2

#### Front

What is momentum measured in?

Kg m/s

### Card 3

#### Front

If an object has the greater mass or velocity what does this mean for the momentum?

### Card 4

#### Front

Is momentum a vector or scalar quatntity?

### Card 5

#### Front

What momentum does a 50kg cheetahs that is running at 60 m/s have?