Speed, velocity and acceleration

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Question 44

Easy

Complete the sentence using data from Figure 1.

Velocity-time graph of a descending deep-sea probe.

Figure 1

Time ( $t$ / s)	Velocity ( $v$ / m/s)
0	0
30	7.5
95	7.5
124	0

The research probe is descending at a constant velocity from ..... s to ..... s.

[1]