Science
Impulse.
Definition
The product of force and the time interval over which it acts. Impulse equals the change in momentum of an object. A larger force or longer contact time produces a greater impulse.
Examples
Real-world.
- 1 A baseball bat contacting a ball for a brief time to change its momentum
- 2 Airbags extending the time of impact to reduce force on passengers
- 3 A golf club applying impulse to drive a ball off the tee
Key Fact
J = FΔt = Δp (impulse equals change in momentum)