- Does a negative acceleration always mean that the object is slowing down?
- If a box of mass 20kg is being pulled by a force of 50N, and the friction is 10N, what is the resulting acceleration of the box?
- Explain the role of the moderator in a fission reaction.
- Alice and Bob are sat on a seesaw. The seesaw is in static equilibrium. Alice weighs 500N and is sat 0.5m to the left of the pivot. If Bob weighs 800N, how far from the pivot on the right is he sat? What happens if Bob moves closer to the pivot?
- Imagine a box sliding down a rough slope. What will the free body diagram for the box look like?