Zusammenfassung der Ressource
Frage 1
Frage
A sphere is released and falls. Its initial acceleration reduces until it eventually begins to travel at constant terminal velocity. Which displacement-time graph best represents the motion of the sphere?
Frage 2
Frage
A building has 5 floors. The windows on successive floors are separated by the same vertical distance.
A brick is dropped from a window on each floor at the same time.
The bricks should hit the ground at:
Frage 3
Frage
A girl dropped a stone into an empty well.
She heard the sound of the stone hitting the bottom of the well after 4 seconds.
The depth of the well is about
Antworten
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A 20 m
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B 40 m
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C 80 m
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D 160 m
Frage 4
Frage
A marble is dropped from the roof of a building and takes 3.2 s to reach the ground.
The approximate height of the building is:
Antworten
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A 16 m
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B 31 m
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C 50 m
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D 100 m
Frage 5
Frage
A ball is thrown vertically upwards with a velocity of +3.0 m.s^-1.
At the maximum height, the acceleration of the ball is -
Antworten
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A 0 m.s^-2
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B – 3.0 m.s^-2
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C + 9.8 m.s^-2
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D – 9.8 m.s^-2
Frage 6
Frage
A ball is dropped from rest from a building 35.0 m high.
If air resistance is neglected the ball hits the ground with a speed of -
Antworten
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A 8.4 m.s^–1
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B 13.1 m.s^–1
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C 18.5 m.s^–1
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D 26.2 m.s^–1
Frage 7
Frage
A bus is travelling at a speed of 9.0 m s–1. It then accelerates at a rate of 0.75 m s–2 for a time of 8.0 s.
What is its final speed?
Antworten
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A 6.0 m.s^–1
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B 15 m.s^–1
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C 17 m.s^–1
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D 21 m.s^–1
Frage 8
Frage
The acceleration of free fall on a particular planet is 8.0 m.s^–2.
An object is dropped from a height and hits the surface of the planet after 1.5 s.
From what height was it dropped?
Antworten
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A 6.0 m
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B 9.0 m
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C 11.0 m
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D 12.0 m
Frage 9
Frage
A cyclist travelling at a speed of 4.2 m.s^–1 accelerates at 1.1 m.s^–2.
In a time of 7.4 s the distance traveled is:
Antworten
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A 30 m
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B 35 m
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C 61 m
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D 91 m