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21 December, 18:29

A carmaker has designed a car that can reach a maximum acceleration of 12 meters/second2. The car's mass is 1,515 kilograms. Assuming the same engine is used, what should the car's mass be if the carmaker wants to reach an acceleration of 15 meters/second2? Use F = ma.

A 1,212 kg

B 1,335 kg

C1,466 kg

D 1,515 kg

D 1,894 kg

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  1. 21 December, 18:55
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    1) 15 / 12 = 1.25 ratio

    2) to increase acceleration 1.25 times (with same F, or same engine) you have to lower mass 1.25 times

    3) 1515/1.25 = 1212 kg

    choose A
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