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5 cards from this section. Quick, good the night before a test.
Define drag in your own words.
Think about the force acting against a moving object.
What is lift?
Consider how planes achieve flight.
What is drag?
Think about how water affects a boat moving through it.
True or False: Lift is caused by pressure differences on opposite surfaces.
Consider airplane wings as an example.
An airplane hovering at a steady height experiences a drag force of 100 N and a lift force of 150 N. Discuss how the airplane can achieve stability.
Consider what happens if lift suddenly decreases.
Calculate the terminal velocity for a spherical object with a diameter of 0.1 m, mass of 0.2 kg in water with density 1000 kg/m³.
Remember that terminal velocity occurs when the net force is zero.
6 more questions in this section. Enroll free to practise them all.
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