8 Energy – forces doing work

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Question 105

H

A spring initially stores 5.0 J. It launches a trolley along a horizontal track and finishes unstretched. During launch, 0.80 J is transferred to thermal stores. The trolley then loses a further 1.2 J to thermal stores. It started at rest. What fraction of the initial spring energy remains in the kinetic store of the trolley?

[1]

$0.60$

$0.40$

$0.24$

$0.84$

8 Energy – forces doing work

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Question 105

H

A spring initially stores 5.0 J. It launches a trolley along a horizontal track and finishes unstretched. During launch, 0.80 J is transferred to thermal stores. The trolley then loses a further 1.2 J to thermal stores. It started at rest. What fraction of the initial spring energy remains in the kinetic store of the trolley?

[1]

$0.60$

$0.40$

$0.24$

$0.84$

8 Energy – forces doing work

Question 105

Markscheme

8 Energy – forces doing work

Question 105

Markscheme

8 Energy – forces doing work

Question 105

8 Energy – forces doing work Questions

8 Energy – forces doing work

Question 105

8 Energy – forces doing work Questions