Force is a vector quantity.
Which is a correct statement about a vector quantity? [1 mark]
Tick one box.
| A | Has direction only | |
|---|---|---|
| B | Has direction and magnitude | |
| C | Has magnitude only | |
| D | Has neither magnitude nor direction |
The figure shows the forces acting on a car moving at a constant speed.
Which force would have to increase to make the car accelerate? [1 mark]
Tick one box.
| A | |
|---|---|
| B | |
| C | |
| D |
What is the unit of momentum? [1 mark]
Tick one box.
| A | J/s | |
|---|---|---|
| B | kg m/s | |
| C | N m | |
| D | m/s2 |
The figure below shows the horizontal forces acting on a car.
Which one of the statements describes the motion of the car? [1 mark]
Tick one box.
| A | It will be slowing down. | |
| B | It will be stationary. | |
| C | It will have a constant speed. | |
| D | It will be speeding up. |
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