Question

this force requires you to use gears, brakes, and wheel blocks (turning your wheels), when parking on inclines.

choose the category below that the above fact relates to.

inertia
potential energy
gravity

Explanation:

Identify the physical force acting on an incline

When parking a vehicle on an incline (a hill), the force pulling the vehicle downward along the slope is gravity.

Relate the force to the required safety measures

To counteract gravity and prevent the vehicle from rolling down the hill, drivers must use gears (parking pawl/transmission), the parking brake, and turn the wheels (wheel blocks) toward or away from the curb.

Evaluate the given options

• Inertia: The tendency of an object to resist changes in its state of motion. It is not a force pulling the car down a hill.
• Potential Energy: This is stored energy due to position, not a force.
• Gravity: The actual force pulling the vehicle downslope, requiring mechanical counter-measures.
• Centrifugal Force: An apparent force felt in a rotating reference frame, not applicable to a parked car.

Answer:

• Inertia
• Potential Energy
• Gravity (Correct answer)
• Centrifugal Force