Question

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Answer 1

Answer:

This graph is incorrect, a distance time graph can never have downwards slope as distance can never reduce. Therefore, this must be an displacement-time graph or a velocity-time graph.

i. Between 5 and 15 seconds, since the mouse's displacement isn't increasing or decreasing.

ii. s = 0m because the mouse returns to it's original position.

iii. s = 5 m

t = 2.5 s

$v = s \div t$

Hence, v = 5/2.5 = 2 m/s

iv. v = 2 m/s = 2 * 1/1000 * 3600 = 7.2 km/hr

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