Asked by Anonymous

A model drag car is being accelerated along its track from rest by a motor with a force of 75N, but there is a drag force of 30N due to the track. What is the Kinetic energy after 2m of travel?
A. 90J
B. 150J
C. 210J
D. 60J
Answered by Henry
W = F*d = (75-30) * 2 = 90 J. = KE.