Energy Changes in a System (AQA GCSE Physics Combined Science): Quizzes

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Kinetic Energy
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What is kinetic energy?

Energy stored in moving objects

How much kinetic energy does a stationary object have?

No kinetic energy

What is the formula for kinetic energy?

Ek=12×m×v2E_k = \frac{1}{2} \times m \times v^2

What is the unit of kinetic energy (EkE_k)?

Joules (J)

What unit is used for mass (mm) in the kinetic energy formula?

Kilograms (kg)

What unit is used for speed (vv) in the kinetic energy formula?

Metres per second (m/s)

What energy conversion occurs when a car uses petrol to move?

Chemical to kinetic

In the formula Ek=12×m×v2E_k = \frac{1}{2} \times m \times v^2, which variable is squared?

Speed (vv)

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Energy Changes in a System

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