Question

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.

Answer 1

Explanation:

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