text: what is the torque requirement on a dc motor to power a toy car? specifically, is there an equation that can relate torque (t) required for a dc motor to power a toy car with total weight (c), two wheels each weighing (w) with radius (r), gear friction (g), surface friction (s) between the wheels and the surface, at a velocity (v)? it should be acceleration (a) and not velocity.  draw a freebody diagram and write one yourself.  i'll make comments on your attempt.