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A car accelerates forward from a stop sign. Air resistance slows the
motion. What force causes the car to accelerate forward?
A) Its weight
B) The force of the engine on the tires
C) The friction on the car from the road
D) The upward force exerted on the car by the road
E) The force of the driver on the accelerator pedal
How does looking at the question from an energy standpoint change things?
The only choices given involve forces as long as a level road can be assumed.
I see no other cause for the forward acceleration?