A car of mass 875 kg is traveling 30.0 m/s when the driver applies the brakes,...

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Answer 1

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Answer #1

(a)

$a=\frac {v-u}{t}=\frac {0-30}{5.60}\: m/s^2= -5.36\: m/s^2$

(b)

$F=ma=(875\times 5.36)\: N = 4690\: N$

(c)

$s=\frac {v^2-u^2}{2a}=\frac {0^2-30^2}{2(-5.36)}\: m = 84\: m$

Answer 2

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