A 200-kg crate is pushed horizontally with a force of 715, Ask an Expert

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Q. A car is traveling 20 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.0 m/s2. How far does the car go before it stops?

Q. A 200-kg crate is pushed horizontally with a force of 715 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

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