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3.1 Energy stores and calculations

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Question 8

Two identical rubber balls, P and Q, each have a mass of 0.25 kg.

The balls move towards separate thick foam blocks.

Ball	Speed in $m/s\text{m/s}$
P	4.0
Q	12

Use the equation

$Ek=12mv2E_{\mathrm{k}}=\dfrac{1}{2}mv^2$

State the factor by which the kinetic energy of ball Q is larger than the kinetic energy of ball P.

[1]

Calculate the energy in the kinetic store of ball Q.

[2]

Ball Q enters the foam block and comes to rest. The foam block is compressed by the impact.

Describe the energy transfers that take place while ball Q is stopping.

[3]

Markscheme

3.1 Energy stores and calculations Questions

GCSE
Physics
3.1 Energy stores and calculations

121 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations, covering 3.1.1 Gravitational potential energy, 3.1.2 Kinetic energy, and 3.1.3 Energy transfers and conservation of energy. Each one has a worked solution and a mark scheme showing where the marks go.

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