Question

A speed versus time graph is shown:

Answer 1

In the given graph, from 4.0 s to 8.0 s, the object is at rest because the speed is zero.

In the given graph we can deduce the following;

• at the time interval, 0 s to 3.5 s, the speed of the object = 1 cm/s

• when the time, t= 4 s, the speed of the object = 0 cm/s

• at the time interval, 4.0 s to 8.0 s, the speed of the object = 0 cm/s

When the speed of an object is zero (0), the object is simply at rest.

Thus, we can conclude that in the given graph, from 4.0 s to 8.0 s, the object is at rest because the speed is zero.

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