MOMENTUM
3 marks · NormalThe following table shows the mass and velocity of three objects moving in a straight line:
| Object | Mass (kg) | Velocity (m/s) |
|---|---|---|
| A | 2.0 | 4.0 |
| B | 1.5 | 6.0 |
| C | 5.0 | 1.0 |
(a)[3 marks]
Calculate the momentum of each object and complete the table below.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) — · must show A: 8.0, B: 9.0, C: 5.0
Must show: Momentum for each object calculated
Common mistakes: Incorrect units
Show mark scheme and worked solution
Marking points
M1 (a) · 1 mark · Correctly calculates p = m × v for at least one object.
A1 (a) · 1 mark · Correctly calculates momentum for two objects.
A2 (a) · 1 mark · Correctly calculates and fills in all three momenta with correct units (kg m/s).
Worked solution
| Object | Mass (kg) | Velocity (m/s) | Momentum (kg m/s) |
|---|---|---|---|
| A | 2.0 | 4.0 | 8.0 |
| B | 1.5 | 6.0 | 9.0 |
| C | 5.0 | 1.0 | 5.0 |