Some quantities are vectors, others are scalars.
Complete the table to show which quantities are vectors and which are scalars. One has been done for you.
| Quantity | Vector | Scalar |
|---|---|---|
| displacement | ||
| kinetic energy | ||
| acceleration | ||
| mass | ✓\checkmark✓ | |
| weight |
A motorcycle and its rider have a combined mass of 320 kg and travel at a velocity of 25 m/s.
State the equation linking momentum, mass, and velocity.
Calculate the momentum of the motorcycle and its rider.
In a safety test, a delivery van crashes into a barrier and stops.
The momentum of the van before the crash is 36000 kg m/s.
The van comes to a complete stop in 0.15 s.
Calculate the average force acting on the van during the crash.
Use ideas about momentum to explain how a crumple zone at the front of the van reduces the force of impact on the passengers.
