Welcome to the Quiz!
This quiz contains 5 questions from a mix of 1 subtopics.
electrical / mechanical / elastic / magnetic
As a ball falls through the air, energy is transferred from the ball's gravitational potential energy store to its kinetic energy store. The energy is transferred between the two energy stores via energy transfer.
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A roller coaster car has 200 kJ of gravitational potential energy and zero kinetic energy when at the top of a 50 m ramp.
State the gravitational potential energy when the roller coaster is at 25 m above the ground.
200,000 J
200 kJ
0 kJ
100,000 J
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A roller coaster car of mass 500 kg is initially stationary. It then descends through a distance of 20 m.
Calculate the kinetic energy of the roller coaster car after descending 20 m.
25 J
100,000 J
0 J
10,000 J
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A ball is thrown vertically upwards.
Which of the following shows the correct energy stores for the ball at the highest point.
GPE = maximum and KE = maximum
GPE = minimum and KE = maximum
GPE = minimum and KE = minimum
GPE = maximum and KE = minimum
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A ball of mass 0.2 kg is thrown upwards with a speed of 2 m/s.
Calculate the maximum height reached by the ball.
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