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13 Cards in this Set
- Front
- Back
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What is the equation for speed |
S=d/t |
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What unit is speed scientifically measured in? |
Metres per second |
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What speed does this equation work out? |
Mean speed (avg. speed) |
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What two resistances happen most frequently on earth? |
Water and air resistance |
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What are balanced forces? |
They are forces that cannot make something start or stop moving, or change its speed. |
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If something is moving and has balance forces what will happen? |
It will keep moving at the same speed. |
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What happens when the forward force is stronger than the back? |
The object accelerates |
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What happens when the backward force is stronger than the front?
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The object Decelerates |
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If forces are unbalanced what can we work out? |
The resultant force. |
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What is the resultant force? |
It is the difference between the forces in one direction and the forces in the opposite direction. |
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What unit is acceleration measured in? |
m/s/s |
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What does the acceleration depend on? |
Size and mass |
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How to work out force? |
Force=Mass x Acceleration |
