Linear Momentum
Linear Momentum
Momentum measures the “quantity of motion” and is conserved in collisions, making it central to impact and recoil problems.
The momentum is p = m·v. where m is the mass and v the velocity.
Inputs
m := 1200 kg=1200 kg
v := 25 m/s=25 m/s
Multiply mass by velocity.
p := m·v=30000 kg·m/s
Results
In a collision total momentum is conserved, so this value sets the recoil or post-impact speeds. A large momentum needs a large impulse (force × time) to change it.
Assumptions & limitations
- Single rigid body.
- Constant mass.
- One-dimensional motion.