Usable energy is lost each time energy is converted to another form of energy.
true or false

True, every time energy is converted to another form, some of it is bled off and made unusable.

0.654 kN

Explanation:

If the driver accelerates from rest to 67 m/s in 8.4 seconds, then the magnitude of the acceleration is:

a = (67 - 0)/ 8.4 = 7.976 m/s^2

Then the net force on the 82 kg driver is:

F = m * a = 82 * 7,976 = 654 N

Therefore, in kN the force's magnitude is:  0.654 kN