Question

In which situations is work being done?
Hannah leans against her locker, but it doesn’t move.
Andy’s car rolls down a hill with the engine off.
A wind turbine stands still on a sunny, windless day.
A balloon expands as it is heated by the Sun.
James pedals a stationary exercise cycle that doesn’t move.

Answer 1

Answer:

Andy’s car rolls down a hill with the engine off.

Explanation:

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Answer 2

Answer:

B & D

Explanation: