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4 cards from this section. Quick, good the night before a test.
What is the formula for work?
Remember the variables involved and the role of angle.
What does kinetic energy depend on?
Consider the factors as described in the formula.
The formula for work is W = F × s × cos θ. What does 'θ' represent?
Think about how the angle affects the work done.
True or false: Energy can be created or destroyed.
Consider the principle of energy conversion.
An elevator lifts a 600 kg load to a height of 10 m. Calculate the work done by the elevator. (Hint: Use W = mgh. Consider g = 9.81 m/s².)
Remember to multiply mass, gravity, and height.
A car accelerates from rest to 20 m/s. If the car has a mass of 1000 kg, find the work done on the car. (Hint: Use the work-energy theorem.)
Calculate the first half of the kinetic energy formula.
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