A particle travels with velocity from to seconds and from to seconds

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A particle travels with velocity 5 cm/s5\text{ cm/s} from t=0t=0 to t=4t=4 seconds and −2 cm/s-2\text{ cm/s} from t=4t=4 to t=7t=7 seconds. Determine its average velocity over the entire interval 0≤t≤70\le t\le 7 seconds. (Express your answer in cm/s.)

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