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3 marksCore physics3.4.1.6

Two trolleys, of mass 1.5 kg and 0.50 kg, are held at rest on a level track with a compressed spring between them. When released, the 0.50 kg trolley moves off at

1.2\,\mathrm{m\,s^{-1}}

Part 1

Calculate the speed of the 1.5 kg trolley.

[1 mark]

Part 2

Calculate the energy that was stored in the spring, assuming it is all transferred to kinetic energy.

[2 marks]

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