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1.7.1a Energy stores and energy transfers

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Question 23

Two students, Alice and Bob, try to move identical school bags, A A\,A and BBB, which are initially on the floor. Alice exerts a horizontal force to push bag A A\,A along the floor, but the bag does not move because it is trapped under a heavy desk. Bob lifts bag B B\,B vertically from the floor onto a desk.

Which student does work on their bag, and which bag gains the most gravitational potential energy?

A

Student doing work: Alice; Bag gaining most energy: AAA

B

Student doing work: Alice; Bag gaining most energy: BBB

C

Student doing work: Bob; Bag gaining most energy: AAA

D

Student doing work: Bob; Bag gaining most energy: BBB

Markscheme

1.7.1a Energy stores and energy transfers Questions

  1. IGCSE
  2. /Physics
  3. /1.7.1a Energy stores and energy transfers

229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.

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