CAIE IGCSE Physics 1.7.1.6 Principle of the Conservation of Questions

Practise applying energy conservation to calculate changes in kinetic, gravitational and dissipated energy with CAIE IGCSE Physics questions and mark schemes.

Exam points

Apply energy conservation to calculate changes in kinetic, gravitational and dissipated energy.

[Maximum number: 1]

A box is initially at rest at the top of a rough slope.
The box slides down the slope.
The weight of the box is 20 N .
The slope is 4.0 m long and 2.0 m high.

Figure for Question CAIE IGCSE Physics 1.7.1.6 Principle of the Conservation of Questions question 1 — CAIE IGCSE Physics

The box does 10 J of work against friction as it slides down the slope.
What is the speed of the box as it reaches the bottom of the slope?

$5.4 \mathrm{~m} / \mathrm{s}$

$6.3 \mathrm{~m} / \mathrm{s}$

$7.1 \mathrm{~m} / \mathrm{s}$

$9.5 \mathrm{~m} / \mathrm{s}$

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CAIE IGCSE Physics 1.7.1.6 Principle of the Conservation of Questions question 1