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1(a)
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Question 1

1(a)

The graph shows the distance travelled by a delivery robot. Calculate the speed of the robot during the first 20 s.
[2 marks]
Black-and-white distance-time graph for a delivery robot. It travels from zero metres at zero seconds to eighty metres at twenty seconds, remains at eighty metres until thirty-five seconds, then travels further. Only the values needed for the Foundation questions are labelled.
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Spec: 4.5.6.1.2, 4.5.6.1.4
Reasoning

1(b)

Describe the motion of the robot between 20 s and 35 s. Use the graph in your answer.
[2 marks]
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Spec: 4.5.6.1.4
Reasoning

1(c)

Later, the robot travels a further 360 m at a constant speed of 4.0 m s⁻¹. Calculate the time taken.
[3 marks]
Drawing board
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Spec: 4.5.6.1.2
Reasoning

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