p = m × v
Momentum (kg m/s) = mass (kg) × velocity (m/s)
Properties:
- Unit: kg m/s (kilogram metres per second)
- Momentum is a VECTOR — has direction
- Direction = direction of velocity
- Can be positive or negative (opposite directions)
Conservation of Momentum:
- In a closed system (no external forces)
- Total momentum BEFORE = Total momentum AFTER
- Works for collisions AND explosions
This key facts covers Key Facts About Momentum within Momentum for GCSE Physics. Revise Momentum in Forces for GCSE Physics with 15 exam-style questions and 6 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Momentum
What is the equation for momentum?
Explain what is meant by saying momentum is a vector quantity.
Quick recall flashcards
Key Facts About Momentum
Momentum is a VECTOR — has direction
Key Facts About Momentum
Unit: kg m/s (kilogram metres per second)