ou buy an inexpensive used car for your hobby of stock car racing. It can attain highway speed with a maximum acceleration of 8.40 mi/(h · s). You would like to increase the acceleration of the car. By making changes to its engine, you can increase the net horizontal force on the car by 24.0%. With much less expense, you can remove material from the body of the car to decrease its mass by 24.0%.
(a)
Before embarking on either of these two changes, you wish to determine which one will result in the greater increase in the car's acceleration. You also want to predict what acceleration you can attain after this change.