Give one example of each case where work done by a force is
a.zero b. positive c. negative
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a.zero is the correct answer
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Step-by-step explanation:
- a) zero . if a boy is pushing a wall he is applying force but wall doesn't move hence work done is zero
- b) Positive work - When we kick a football, it moves in the direction of the force applied and hence, the work done in this case is positive.
- c) Negative - Work was done the gravity on a rocket going perpendicular upwards. Zero work: When force and displacement are perpendicular to each other, or when force or displacement is zero.
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