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  1. Subjects
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  3. Physical Sciences
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  5. Grade 12 Physical Sciences Theory
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  7. Momentum and impulse
Grade 12 · Theory

Momentum and impulse

Momentum as mass times velocity, impulse and the change it produces, and conservation of momentum in collisions and explosions.

4 free units in this chapter

Units in this chapter

Momentum

Momentum measures how hard it is to stop a moving object, combining mass and velocity.

About 3 min

Impulse and Newton's second law

Impulse links force and time to the change in momentum an object experiences.

About 3 min

Conservation of momentum

In an isolated system, total momentum before a collision equals total momentum after.

About 3 min

Elastic and inelastic collisions

All collisions conserve momentum, but only elastic ones conserve kinetic energy.

About 3 min