Edexcel IGCSE Physics Ratios and Scale Factors

Practise Edexcel IGCSE Physics ratios and scale factors by measuring from a diagram and converting the value into a real distance.

Exam points

Use a stated diagram scale to convert a measured length into the real distance moved.

[Maximum number: 2]

A squash ball is made of rubber and used to play a game called squash.

$Figure for Question 1C Ratios, fractions, percentages, powers and roots question 1 — Edexcel IGCSE Physics$

A student observes that the squash ball bounces higher after its temperature increases.

The student designs an investigation to see how the temperature of the ball affects the maximum height after it bounces.

The diagram shows the ball at its maximum height after it bounces.

Determine the distance the ball moves from the floor to its maximum height.
Assume the ball does not change shape when it bounces.
[1 cm on diagram = 4 cm in laboratory]

$Figure for Question 1C Ratios, fractions, percentages, powers and roots question 1 — Edexcel IGCSE Physics$

measurement from floor to bottom of ball; correct use of scale;

e.g.

distance = $6.2(\mathrm{~cm})$

distance $=(6.2 \times 4=) 24.8(\mathrm{~cm})$

accept range 6.1-6.3 (cm)

accept range 24.4-25.2 (cm)

ECF candidate's value for measurement.

25.6-30.0 (cm) scores 1 mark

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