# Physics 3-Motion

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How would you find a non constant acceleration?
Change in speed over time
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what is acceleration measured in?
M/S2
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What is velocity measured in?
m/s
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What must be included in any measurement for a constant acceleration equation (excluding time)
A direction
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Why?
They are vectors
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What is left/right represented by?
A -/+ value
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What objects do the constant acceleration equations work well for?
Objects under the influence of gravity, objects on planets (acceleration form gravity is constant)
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What is an important deature to consider when using these equations?
Negligible air resistance/friction
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Why, when calculating the acceleration of a falling object, is the final velocity not considered 0?
It is the velocity just before it makes contact with the ground.
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What can be said about the momentum of two interacting bodies, if there are no external forces acting?
It is constant
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What happens to energy that is 'lost' in a collision?
IT's converted into heat or sound and transferred to the surroundings.
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How can the Kinetic energy loss be found?
KE before- KE after
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What is the term for a collision where no kinetic energy is lost?
An elastic collision
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What is an inelastic collision?
Where kinetic energy is lost during a collision
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## Other cards in this set

### Card 2

#### Front

what is acceleration measured in?

M/S2

### Card 3

#### Front

What is velocity measured in?

### Card 4

#### Front

What must be included in any measurement for a constant acceleration equation (excluding time)

Why?