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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
What is the equation for speed
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S = d ÷ t
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What is the equation for average speed
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average speed = total distance ÷ total time
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How to speed camera find the speed of a vehicle
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2 photographs are taken, these can be:
A certain time apart, so the distance traveled in that time can be calculated A certain distance apart, so that the time taken front the first place to the second can be calculated |
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What is instantaneous speed
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Not the same as average speed
To find it out, calculate the average speed over a shorter period of time |
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How do you calculate distance
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D = average speed × time
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How do calculate the distance when the speed changes
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D = (u+v ÷ 2) × t
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D = distance
u = starting speed v = finishing speed T = time taken |
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How do you calculate the speed on a distance-time graph
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S= y ÷ x
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On a distance-time graph what does a straight line mean
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The object has stopped
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On a distance-time graph what does a straight line sloping upwards mean
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The object is traveling at a constant/steady speed
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On a distance-time graph what does the gradient show
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Speed
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On a distance-time graph what does a steep gradient mean
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higher speed
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On a distance-time graph what does a curved line mean
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the speed is changing
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