Acar in dynamic equilibrium is acted upon by the following forces:
force due to gravity= -9000 newtons
force due to friction = -250 newtons
forward force exerted by engine = 250 newtons.
what is the value of the force exerted by the ground on the car?

The text compares alternating current with direct current. how are they different? a alternating current reverses direction in the electrical wiring. direct current flows in one direction only. b direct current reverses direction in the electrical wiring. alternating current flows in one direction only. c direct current is powered by solar energy. alternating current is powered by electrical energy. d alternating current does not move in the electrical wiring. direct current does move in the electrical wiring.