- A plane is entering a turn, identify the main forces acting on it (including central forces)
- A ball is dropped from a height of 20m. How long does it take for the ball to reach ground?
- If Jessica weighs 45kg and sits on a seesaw at a distance of 2m from the centre of the seesaw.Micheal weighs 90kg. At what point on the opposite side should Micheal sit in order to balance the seesaw.
- A boy with a mass of 50kg is sitting on a seesaw. He is sitting 2m from the pivot. He has a friend who weighs 40kg, how far away from the pivot must she sit to balance the seesaw? (gravitational accelleration (g) = 10m/s2)
- A ball of mass 1kg is rolled down a hill of height 10m. At the bottom it collides with another ball of mass 5kg. What speed does the second ball move away with? You can assume the collision between the balls is elastic.