A car starts to move along a straight road. A drop of oil falls from the car’s engine onto the road every three seconds. Table 1.5 gives the distances along the road (in metres) between the drops of oil.
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Question No. 2
Define the terms ‘rectilinear’ and ‘uniform’.
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Question No. 3
Think of the concept of ‘negative acceleration’.
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Question No. 4
How much speed is added in each second to a body falling freely towards the Earth?
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Question No. 5
Which famous physicist developed the equations we use for calculating velocity, displacement and acceleration?
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Question No. 6
Disregarding air resistance, how far does a body move during the first second of its fall?
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Question No. 7
Briefly explain why a planet moving in its orbital path around the sun is accelerating.
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Question No. 8
Imagine that someone dug a hole through the Earth – from one side to the other, and passing through the centre of the Earth. Now imagine that you drop a heavy ball down this hole. Where will it stop? Explain your answer.
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Question No. 9
In your own words, briefly explain why a falling body moves faster and faster, yet the acceleration is constant (unchanging).
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