Question

question 5 of 10
a toy cars engine pushes it forward at a constant speed. what happens if the force provided by the engine decreases?
a. the toy cars state of motion changes.
b. the toy cars speed remains constant.
c. the toy cars mass increases.
d. the toy car gains inertia.

Explanation:

When the toy car is moving at a constant speed, the forward - force from the engine balances the resistive forces (like friction). If the engine force decreases, the net force on the car is no longer zero. According to Newton's second law ($F = ma$), a non - zero net force causes a change in the car's acceleration, and thus its state of motion changes.

Answer:

A. The toy car's state of motion changes.