Momentum - No Impulse
Physics: Edexcel IGCSE, topic 1.3.1
Momentum
The momentum of an object is its mass multiplied by its velocity (p = mv). Momentum is a vector quantity.
Conservation of momentum
- The law of conservation of momentum says that momentum cannot be created or destroyed.
- So, if two objects collide, the sum of momentum before collision = sum of momentum after collision.
Change in momentum = mv - mu
- Change in momentum = mv - mu, where m is mass, u is the initial velocity of an object and v is the final velocity of an object.
Test yourself on Momentum - No Impulse
What are the units of momentum?
Using ideas about momentum, describe how a rocket is launched.
Is momentum a vector or scalar quantity?