Answer:
- Impulse is the product of force and time and equals change in momentum.
- SI unit: Newton-second (N·s).
Concept
J = F × t
J = Δp = m(v-u)
Relation with Force and Time
- Greater force or longer time produces greater impulse.
- Increasing collision time reduces impact force.
Applications
- Airbags, helmets, shock absorbers
- Sports techniques and rocket propulsion
Impulse links force, time and momentum in mechanics.