Question

A remote-control car has batteries that store 1.8 kJ of energy. When the car is
driven across a sports field there is friction dragging on the car, producing a force
of 2 N.
Complete the following sentence: If the car is 100% efficient, it could travel a
distance of metres on a single battery charge.

Answer 1

Answer:

Explanation:

Complete the following sentence: If the car is 100% efficient, it could travel a distance of 900 meters on a single battery charge.

    W = Fd

1800 = 2d

     d = 900

Assuming 100 % efficient means turning battery power into motion.

A car totally 100% efficient would have zero friction and could travel an infinite distance on a full battery charge.