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15 Cards in this Set
- Front
- Back
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What three things are needed when describing a motion?
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Speed/Velocity
Constant/changing Acceleration/deceleration |
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What's the difference between vectors and scalars?
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Vectors have a magnitude and direction.
Scalars have a magnitude ONLY |
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Displacement and Distance.
Which is a scalar and which is a vector? |
Vector; displacement
Scalar; distance |
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Velocity and Speed.
Which is a scalar and which is a vector? |
Vector; velocity
Scalar; speed |
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In the picture, what is the displacement and what is the distance?
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Displacement; 3m east
Distance; 5m |
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In a distance/time graph, what does a steeper gradient show?
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Faster speed
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In a distance/time graph, what does a horizontal line show?
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Stationary
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In this graph, state what's happening at A, B, C and D.
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A; Uniform Acceleration
B; Constant Speed C; Stationary D; Large deceleration |
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In a speed/time graph, if two areas are the same, what does this show?
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The distance travelled is equal
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In this graph, state what's happening at A, B and C.
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A; Movement in one direction
B; Stationary C; Movement in another direction. |
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What is stopping distance? (2)
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The distance travelled when a car is coming to a sudden halt. It is the total of the thinking and braking distances.
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What is the thinking distance?
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The distance between the driver noticing a problem and the driver applying the brakes.
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What factors affect the thinking distance? (4)
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Reaction time of driver
Alcohol/drug use Speed travelling Tiredness |
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What is the braking distance?
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The distance the car travels whilst the brakes are being applied before it comes to a halt.
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What factors affect the braking distance?
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Worn brakes
Road conditions Speed travelling Mass of car |
