1. Motion Detector
Force Probe

2. Area under the curve of a graph of Force vs. time

3. Area under the curve of a graph of Force vs. time
Units:

4. Area under the curve of a graph of Force vs. time
Impulse - Change in Momentum Theorem
For a constant (or average) Force
Units:

5. Impulse - Change in Momentum Theorem
Elastic Collision – a collision during which kinetic energy is conserved.
In other words, no energy is dissipated during the collision.
Inelastic Collision – a collision during which kinetic energy is not conserved.
Some of the energy is dissipated and is usually stored as thermal energy or sound.

6. Derivation For constant (or average) forces But
If the system is closed (no change in mass)
For constant forces
Newton’s 2nd Law

7. a. How long is the force applied?

8. b. How big of an average force would need to be applied if it lasted 6
b. How big of an average force would need to be applied if it lasted 6.0 s?
Notice: twice the time requires only half the force!