The diagram shows a car and a van, just before and just after the car collided with the van, which is initially at rest.
Use the idea of conservation of momentum to calculate the velocity of the van when it is pushed forward by the collision.
Answer:
Step 1: State the principle of conservation of momentum
Step 2: Calculate the total momentum before the collision
- Momentum of the van
- The van is at rest
- Therefore, v = 0 m/s
- Therefore, p = 0 kg m/s
- Total momentum before collision
Step 3: Calculate the total momentum after the collision
- Total momentum after collision
Step 4: Rearrange the conservation of momentum equation to solve for v