Answer to Question #134506 in Physics for Jeph

Question #134506

A truck of mass 50kg has its speed reduced from 4m/s to 1.5m/s in 30s. Find the braking force (assumed constant )

Expert's answer

"F=ma"

"v=v_0-at\\to a=\\frac{v_0-v}{t}=\\frac{4-1.5}{30}=0.083(m\/s^2)"

"F=50\\cdot0.083=4.17(N)"

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