P2-1

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What is the SI unit of distance?
Meters
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What is the speed of a runner who covers 400m in 50s?
400 divided by 5=80
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What is the difference between speed and velocity?
Velocity is speed but in a given direction
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What is the SI unit of acceleration?
Meters per second squared
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What does a horizontal line on a velocity-time graph represent?
Zero
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What would the velocity-time graph for a steadily decelerating object look like?
It would have a negative gradient
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What does an upwardly curving line represent on a distance-time graph?
increasing velocity
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What does an upwardly curving line represent on a velocity-time graph?
increasing acceleration
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What is the average speed, in m/s, of a car that completes a distance of 1.2km in 1 minute?
20m/s
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What does the distance-time graph for a stationary object look like?
It would be horizontal
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What quantity has the units m/s^2?
Acceleration
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What does a negative value for acceleration mean?
That something is decelrating
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What happens to the gradient of the line on a distance-time graph if the speed increases?
gradient increases
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How can an object travelling at a steady speed be accelerating?
by changing direction
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A car accelerates from rest to a speed of 40 m/s in 10s. what is its acceleration?
40 divided by 10=4
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What part of a velocity-time graph represents the distance travelled?
The area under the line
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Other cards in this set

Card 2

Front

What is the speed of a runner who covers 400m in 50s?

Back

400 divided by 5=80

Card 3

Front

What is the difference between speed and velocity?

Back

Preview of the front of card 3

Card 4

Front

What is the SI unit of acceleration?

Back

Preview of the front of card 4

Card 5

Front

What does a horizontal line on a velocity-time graph represent?

Back

Preview of the front of card 5
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