Question 1
What is the equation for kinetic energy?
Ek = mgh
Ek =
Ek =
Ek = Fs
0%
DP IB Physics: HL
Topic Questions
2.3 Work, Energy & Power
Question 2
Which of the following statements about gravitational potential energy is correct?
If a mass falls it will lose gravitational potential energy
If a mass is lifted up it will lose gravitational potential energy
If a mass falls it gains gravitational potential energy
If a mass travels horizontally then gravitational potential energy is lost
Question 3
Which of the following is the correct definition for elastic potential energy?
Elastic potential energy is a measure of how much a material can be stretched or compressed
Elastic potential energy is the maximum amount that can be stretched or compressed
Elastic potential energy is a measure of the stiffness of a material
Elastic potential energy is the energy stored within a material (e.g. in a spring) when it is stretched or compressed
Question 4
Which feature of a force-extension graph represents the work done on a material under tensile stress?
Gradient
Area
y-intercept
x-intercept
Question 5
What is a material with a high breaking stress described as?
Strong
Brittle
Ductile
Elastic
Question 6
Which one of the following situations does not describe the work done on an object?
Lifting a bar above the head
Pushing a supermarket trolley across a car park
Walking up stairs
Holding a box at a height of 1.5 m above the floor
Question 8
Which row states an energy transfer?
Elastic
Chemical
Gravitational Potential
Electrical
Question 9
What is another way of saying that energy is wasted?
Energy has been transferred
Energy has been dissipated
Energy has been conserved
Energy has been destroyed
Question 10
Which is the correct equation for the efficiency of a system?
Efficiency =
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Efficiency =
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Efficiency =
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Efficiency =
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