For any particle moving in one dimension for a finite time interval

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

For any particle moving in one dimension for a finite time interval, which relation between its average speed vavgv_{\text{avg}} and the magnitude of its average velocity ∣vˉ∣|\bar v| is always true? (a) vavg=∣vˉ∣v_{\text{avg}} = |\bar v| (b) vavg≥∣vˉ∣v_{\text{avg}} \ge |\bar v| (c) vavg≤∣vˉ∣v_{\text{avg}} \le |\bar v| (d) vavg<∣vˉ∣v_{\text{avg}} < |\bar v|

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