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1.1 Energy changes in a system, and the ways energy is stored before and after such changes

1.1 Energy changes in a system, and the ways energy is stored before and after such changes

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Question 2
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A coconut is about to fall from a palm tree.

a.

Complete the sentences. Choose answers from the box.

elastic potentialgravitational potentialkineticchemical \text{elastic potential} \quad \text{gravitational potential} \quad \text{kinetic} \quad \text{chemical} elastic potentialgravitational potentialkineticchemical

As the coconut falls towards the ground, there is a decrease in its __________ energy.

As the coconut falls towards the ground, there is an increase in its __________ energy.

[2]
b.

Write down the equation which links kinetic energy (EkE_kEk​), mass (mmm), and speed (vvv).

[1]
c.

At the instant just before the coconut hits the ground, the kinetic energy of the coconut is 48 J48\text{ J}48 J.

The speed of the coconut is 8.0 m/s8.0\text{ m/s}8.0 m/s.

Calculate the mass of the coconut.

[3]
d.

When the coconut hits the ground, most of its kinetic energy is transferred to the ground.

How does this affect the thermal energy of the ground?

  • The thermal energy decreases.
  • The thermal energy stays the same.
  • The thermal energy increases.
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Markscheme

1.1 Energy changes in a system, and the ways energy is stored before and after such changes Questions

  1. GCSE
  2. /Physics
  3. /1.1 Energy changes in a system, and the ways energy is stored before and after such changes

44 exam-style questions on AQA GCSE Physics 1.1 Energy changes in a system, and the ways energy is stored before and after such changes, covering 1.1.1 Energy stores and systems, 1.1.2 Changes in energy, 1.1.3 Energy changes in systems, and 1.1.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.

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