Edexcel IGCSE Physics Substitute Values with Units

Edexcel IGCSE Physics Substitute Values with Units
Edexcel IGCSE Physics syllabusPhysics 4PH1Issue 4 (2024)

Practise Edexcel IGCSE Physics substituting values with units by using graph readings in a formula and rearranging to calculate launch speed.

How this is tested

  • Use graph readings in a formula, rearrange for launch speed and give the answer with units.

Question 11(b)(iv)

[Maximum number: 4]

A steel ball is fired from a launcher on an adjustable table.
A student investigates how the range of the steel ball varies with the height of the table.

Figure for Question 11(b)(iv) — Edexcel IGCSE Physics

The graph shows the student's results.

Figure for Question 11(b)(iv) — Edexcel IGCSE Physics

The range of the projectile is related to the table height by this formula

range = launch speed x sqrt(table height / 5)

Using data from the graph, show that the launch speed of the projectile is approximately 3 m/s.

launch speed = ............ m/s