Answer:
D.velocity
Explanation:
When unbalanced forces are applied to a moving bike along the direction its moving, the velocity of the bike changes.
Unbalanced forces causes a body to accelerate. Acceleration is the rate of change of velocity with time.
When unbalanced forces acts on a body, the velocity changes.
- An unbalanced force is a force whose resultant is not zero.
- Such a force causes a body to change motion and then acceleration.
- For a body to accelerate, the velocity must change per unit of time.
