Craig asked in Science & MathematicsPhysics · 1 decade ago

A car traveling east at 45.6 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his spe?

A car traveling east at 45.6 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25.0 m/s in 4.20 s.

(b) How far does the car travel in the 4.20-s time period?

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  • 1 decade ago
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    When you driving at 45,6 m/s and you reduces your speed uniformly to 25.0 m/s you drive on the average 35.3 m/s In 4.20 s that is 148.26 m.

    So can also use the formal equations: a = (v1 - v0) / t. = (45.6 - 35.3)/4.2

    and s = v0.t + (1/2).a.t^2 with s (at t=0) = 0.

    It all end up to 148.26 m

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