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This quiz contains 17 questions from a mix of 1 subtopics.
What is the formula used to calculate kinetic energy?
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If an object with a mass of 5 kg is moving at a velocity of 2 m s-1, what is its kinetic energy?
40 J
5 J
10 J
20 J
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What variables are used in the formula to calculate gravitational potential energy?
speed, gravity, height
gravity, velocity, height
mass, gravity, height
mass, speed, height
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An object with a mass of 2 kg is lifted to a height of 5 m above the ground. What is its gravitational potential energy, given g = 9.81 m s-2?
98.1 J
150 J
200 J
50 J
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Which statement best describes the law of conservation of energy?
energy can neither be created nor destroyed, only transferred
energy can be created but not destroyed
energy can be destroyed but not created
total energy in the universe always increases
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In a pendulum system, when does the pendulum have maximum kinetic energy?
when it is at rest
at the lowest point of the swing
the kinetic energy stays constant
at the highest points of the swing
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As a pendulum swings, when does it have minimum potential energy?
at the highest points of the swing
at the lowest point of the swing
the potential energy stays constant
at the midpoint of the swing
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A car is moving initially at 20 m s-1. It applies brakes and comes to rest after traveling 50 m. If the total mass of the car including passengers is 1,300 kg, how much kinetic energy did the brakes remove?
520,000 J
390,000 J
130,000 J
260,000 J
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A ball is thrown vertically upwards with an initial speed of 15 m s-1. What maximum height will it reach, ignoring air resistance? g = 9.81 m s-1.
22.5 m
11.47 m
45 m
90 m
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Which of the following correctly defines gravitational potential energy?
energy possessed by a body by virtue of its acceleration
energy possessed by a body by virtue of its position
energy possessed by a body by virtue of its velocity
energy possessed by a body by virtue of its shape
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What is the name given to the energy stored in an object due to its motion?
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What is the standard acceleration due to gravity on Earth?
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Give 3 key points about energy transformations in a swinging pendulum system.
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Describe what happens to the kinetic energy of a ball as it is thrown vertically upwards and then falls back down under gravity.
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A car with a mass of 1,200 kg is moving at a speed of 20 m/s. Calculate the kinetic energy of the car.
240,000 J
480,000 J
12,000 J
120,000 J
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A rock is dropped from a height of 15 m. Assuming the mass of the rock is 2 kg, calculate its kinetic energy just before it hits the ground.
147 J
294 J
300 J
441 J
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Calculate the kinetic energy of a bicycle with a mass of 15 kg, moving at a velocity of 3 m/s.
22.5 J
67.5 J
90 J
45 J
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