2333229
Descrição
Quiz por Rachel_ellen, atualizado more than 1 year ago
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Criado por Rachel_ellen
quase 10 anos atrás
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Questão 1
Questão
What is the equation for speed?
Responda
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time / distance
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change in speed / time taken
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time x distance
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distance / time
Questão 2
Questão
A steeper slope means a slower speed
Responda
- True
- False
Questão 3
Questão
What is acceleration?
Responda
-
speed of an object in a certain direction
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the change in speed per second
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the time taken for a change in speed
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frictional force that acts on a moving object
Questão 4
Questão
What are forces measured in?
Responda
-
Newtons (N)
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Kilograms (kg)
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Watts (W)
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Joules (J)
Questão 5
Questão
How can thinking distance be increased?
Responda
-
icy/wet road conditions
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tiredness
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worn brakes or tyres
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mass of vehicle
Questão 6
Questão
What is the equation for stopping distance?
Responda
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thinking distance x braking distance
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thinking distance + braking distance
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braking distance / stopping distance x100
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stopping distance - thinking distance
Questão 7
Questão
Work is done whenever a force moves an object
Responda
- True
- False
Questão 8
Questão
What is power measured in?
Responda
-
Joules ( J )
-
Watts (W)
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Newtons ( N )
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Kilograms ( kg )
Questão 9
Questão
What is kinetic energy?
Responda
-
energy when you stand still
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energy an object has because of its movement
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increased speed of an object
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a force of attraction between masses
Questão 10
Questão
Cars with a greater kinetic energy will have a lower braking distance
Responda
- True
- False
Questão 11
Questão
What do seatbelts do?
Responda
-
cushion the impact for the driver and passengers
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absorb energy and break to avoid the driver being impaled during an accident
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prevent people in the car from being propelled forwards
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be a part of the car designed to crumple up during a collision
Questão 12
Questão
What do air bags do?
Responda
-
cushion the impact for the driver and passengers
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absorb energy and break to avoid the driver being impaled during an accident
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prevent people in the car from being propelled forwards
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be the part of the car designed to crumple up during a collision
Questão 13
Questão
What do crumple zones do?
Responda
-
cushion the impact for the drivers and passengers
-
absorb energy and break to avoid the driver being impaled during an accident
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prevent people in the car from being propelled forwards
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be the part of the car designed to crumple up during a collision
Questão 14
Questão
What is the equation for momentum?
Responda
-
mass x acceleration
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mass x velocity
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force / time taken
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mass / acceleration
Questão 15
Questão
At higher speeds, falling objects experience more drag
Responda
- True
- False
Questão 16
Questão
When a skydiver jumps out of an aeroplane, what does he initially do?
Responda
-
deaccelerate due to air resistance
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accelerate due to the force of gravity
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accelerate due to air resistance
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deaccelerate due to the force of gravity
Questão 17
Questão
What is the height of a 160g cricket ball if it has 30J of gravitational potential energy?
Responda
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18.75m
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18m
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10.46m
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5.3m
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