A gymnast falls towards a trampoline.
Complete the sentences. Choose answers from the box:
[ chemical | elastic potential | gravitational potential | kinetic | nuclear ]
As the gymnast lands on the trampoline, each spring stretches 0.02 m0.02\text{ m}0.02 m. The spring constant of each spring is 80 000 N/m80\,000\text{ N/m}80000 N/m.
Calculate the energy stored by each spring.
Use the equation: elastic potential energy=0.5×spring constant×(extension)2\text{elastic potential energy} = 0.5 \times \text{spring constant} \times (\text{extension})^2elastic potential energy=0.5×spring constant×(extension)2
There are 48 springs on the trampoline.
Calculate the total energy stored by the 48 springs when each spring is stretched by 0.02 m0.02\text{ m}0.02 m. Use your answer from Part 2.
The kinetic energy of the gymnast as she lands on the trampoline is 650 J650\text{ J}650 J. The maximum kinetic energy of the gymnast after she bounces is 48%48\%48% of her kinetic energy as she lands.
Calculate the maximum kinetic energy of the gymnast after she bounces.
Why is the kinetic energy of the gymnast after she bounces less than her kinetic energy as she lands? Select one option:
Practise AQA GCSE Physics Energy changes in a system, and the ways energy is stored before and after such changes with exam-style questions for Foundation and Higher tier. 64 questions covering Energy stores and systems, Changes in energy, Energy changes in systems, and Power, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.