Question 4
F61%A skateboarder rides down a ramp. Figure shows the skateboarder at the top of the ramp.
The skateboarder and the skateboard have a total mass of 55 kg. The vertical height of the ramp is 2.4 m. The gravitational field strength is 9.8 N/kg.
Figure: A skateboarder at the top of a ramp of vertical height 2.4 m
a.[3]
Calculate the change in the gravitational potential energy store of the skateboarder and skateboard as they move from the top of the ramp to the bottom.
b.[3]
At the bottom of the ramp the skateboarder is moving at 6.0 m/s. Calculate the energy in the kinetic energy store of the skateboarder and skateboard at the bottom of the ramp.
c.[1]
The answer to part b) is smaller than the answer to part a). Suggest one reason why.
d.[1]
The skateboarder goes down the same ramp again while carrying a heavy bag. Give the effect of the extra mass on the change in the gravitational potential energy store.
1.1 Energy changes in a system, and the ways energy is stored before and after such changes Questions
40 exam-style questions on AQA GCSE Physics 1.1 Energy changes in a system, and the ways energy is stored before and after such changes, covering 1.1.1 Energy stores and systems, 1.1.2 Changes in energy, 1.1.3 Energy changes in systems, and 1.1.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.