What is Momentum Force?

Momentum is the force that exists in a moving object. The momentum force of a moving object is calculated by multiplying its mass (weight) by its velocity (speed).

Simply put, a 20-lb. rock going at 10 mph has much more momentum force than a 3-lb. ball going at the same speed.

When you are driving, you and your vehicle have momentum force based on the total weight of your vehicle and your speed. If you increase your speed from 30 mph to 60 mph, you will just double your momentum force.

This calculation also applies when you haul materials that can increase your vehicle's weight, which will increase your vehicle's momentum proportionally based on added weight.

When you need to slow down or stop, you will need to decrease your vehicle's momentum by:

  • Using the friction force of your brakes by applying your brakes.
  • Using the friction force between your tires and the road, which is done automatically.
  • Using the compression force of your engine by switching to a lower gear.

If you are in a moving vehicle and you have an accident with an object, the momentum force and kinetic force of your moving vehicle and your body must be absorbed, which can cause damage to your vehicle and injury to your body.