1. Momentum

2. Momentum
Momentum is defined as the product of an object’s mass (m) multiplied by its velocity (v).

3. Momentum
You can think of momentum as a measurement of how HARD it is to STOP a MOVING object.
The equation on the previous slide simply says, in mathematical terms, that moving objects are harder to stop (have more momentum (p)), when they have greater velocity (v) and/or more mass (m).

4. Momentum
When you think about it, this makes sense in terms of everyday experience.
For example, it is harder to stop a car moving at 50 mph than one moving at 20 mph. (Same mass, different velocity)
Similarly, it is harder to stop a truck moving at a 80 mph than a baseball moving at 80 mph. (Same velocity, different mass)

5. Momentum
It is possible to rearrange the momentum equation in order to isolate and solve for mass (m)
or velocity (v)

6. Momentum
Example #1: How much momentum does an 80 kg man have when he is falling at 6 m/s?

7. Momentum
Example #2: A 500 kg car has a momentum of 7500 kgm/s. How fast is the truck going?

8. Momentum
Example #3: A bowling ball is going 14 m/s and has a momentum of 70 kgm/s. What is the mass of the bowling ball?