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4 cards from this section. Quick, good the night before a test.
What formula represents work done?
Think about how force and direction interact.
What is the SI unit for work?
Consider how work, force, and distance relate.
What does the formula W = F × s × cos(θ) represent?
Consider the relationship between force, displacement, and angle.
Energy can be created or destroyed.
Think back to the laws governing physical energy.
A ball with a mass of 2 kg rolls down a hill, converting its potential energy to kinetic energy. If it starts from a height of 5m, what will be its speed at the bottom of the hill?
Energy conservation means potential energy at top equals kinetic energy at bottom.
Calculate the work done if a force of 50 N moves an object 4 meters in the direction of the force.
Use the work formula directly with the given values.
5 more questions in this section. Enroll free to practise them all.
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