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