Atruck uses a big engine for the acceleration while a car uses a smaller engine. the bicycle rider uses the force of his own. why does each vehicle require a different amount of force to accelerate?

Because of Newton's 2nd law of motion

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).