Question

Give one example of each case where work done by a force is

a.zero b. positive c. negative​

Answer 1

a.zero is the correct answer

Answer 2

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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