Motion Detector Force Probe.

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Presentation transcript:

Motion Detector Force Probe

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

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

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

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.

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

a. How long is the force applied?

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!