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Assessment
What is the definition of work in physics?
Work is the energy transferred when an object is moved over a distance by an external force.
Work is the total energy of a system.
Work is the force exerted on an object divided by the distance over which it is exerted.
Work is the change in kinetic energy of an object.
Which of the following formulas represents the calculation of work done?
W = F × d × cos(θ)
W = m × a
W = ½ mv²
W = F × t
In what scenario would no work be done on an object?
When a person lifts a box straight up.
When pushing a stationary wall.
When carrying a backpack horizontally at a constant speed.
When kicking a ball down the field.
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