The physics
Momentum is 'quantity of motion': mass times velocity. It measures how hard something is to stop. A slow lorry and a fast bicycle can carry similar momentum — and require a similar impulse to bring to rest.
Momentum of a 40,000 kg truck at 90 km/h
Answer: momentum = 1,000,000 kg·m/s.
What we know
- Mass: 40000 kg
- Velocity: 90 km/h = 25 m/s (converted to the unit the formula takes)
Step by step
- Given
- m = 40000 kg, v = 25 m/s
- Formula
- p = m × v
- Substitute
- p = 40000 × 25
- Result
- p = 1,000,000 kg·m/s
All results
| Momentum | 1,000,000 kg·m/s |
|---|
Open the momentum calculator with these numbers → and change any of them.