- Write the equations of motion for constant acceleration and describe each term involved. Explain how to apply these equations of motion to calculate the horizontal and vertical components of a projectile moving under the force of gravity only.
- A particle of mass 5kg is acted upon by a force of 400N for a distance of 20m along the x axis. What is its final velocity if it is initally at rest?
- A student investigated how the resistance of a piece of nichrome wire varies box with length.Describe how the student would obtain the data needed for the investigation. Your answer should include a risk assessment for one hazard in the investigation.
- A stone is thrown from the top of a cliff. When is its mechanical energy higher, at the top of the cliff right before being thrown or right before hitting the ground?
- 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)