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 |
|---|---|---|
| force | ||
| gravitational potential energy | ||
| velocity | ||
| speed | ✓\checkmark✓ | |
| momentum |
An autonomous cargo drone and its payload have a combined mass of 18 kg and travel at a horizontal velocity of 12 m/s.
State the equation linking momentum, mass, and velocity.
Calculate the momentum of the drone and its payload.
In a hazard prevention test, a prototype runaway railcar is stopped by a buffer system.
The momentum of the railcar just before it hits the buffer system is 7500 kg m/s.
The railcar is brought to a complete stop in 0.15 s.
Calculate the average force acting on the railcar during the collision.
Use ideas about momentum to explain how a spring-loaded bumper on the front of the railcar reduces the force of impact.
56 exam-style questions on Edexcel IGCSE Physics Forces, movement, shape and momentum. Each one has a worked solution and a mark scheme showing where the marks go.