KE, GPE & EPE (OCR GCSE Physics A (Gateway Science Suite)): Quizzes

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KE, GPE & EPE
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When does an object have energy in its kinetic energy store?

When it is moving

Which two factors determine the amount of kinetic energy an object has?

Mass and velocity

What is the formula for calculating kinetic energy?

Ek=12mv2Ek = \frac{1}{2}mv^2

What are the correct units for velocity in the kinetic energy formula?

metres per second (m/s)

When does an object gain gravitational potential energy?

When lifted in a gravitational field

Which factors determine gravitational potential energy?

Mass, height & g-field strength

What is the formula for calculating gravitational potential energy?

Ep=mghEp = mgh

What are the units for gravitational field strength in the GPE formula?

newtons per kilogram (N/kg)

When does an object gain elastic potential energy?

When stretched or squashed

What factors determine elastic potential energy?

Extension & spring constant

What is the formula for elastic potential energy?

Ee=12kx2Ee = \frac{1}{2}kx^2

What are the units for spring constant?

newtons per metre (N/m)

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