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Movement and position

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Question 8

An experiment is designed to study the motion of a low-friction glider on a tilted air track.

The student plans the experiment as follows:

  • Release the glider from 6 different distances from a photogate: 20 cm20\text{ cm}20 cm, 40 cm40\text{ cm}40 cm, 60 cm60\text{ cm}60 cm, 80 cm80\text{ cm}80 cm, 100 cm100\text{ cm}100 cm, and 120 cm120\text{ cm}120 cm.
  • Measure the final speed of the glider as it passes through the photogate at the end of its run.
  • Repeat the final speed measurement 3 times for each release distance and calculate the mean average.
  • Keep the initial speed of the glider at exactly zero for each release.
a.

Identify the independent variable and the dependent variable in this experiment.

[2]
b.

At a release distance of 80 cm80\text{ cm}80 cm, the student records the following raw data for the final speed of the glider:

  • Trial 1: 2.24 m/s2.24\text{ m/s}2.24 m/s
  • Trial 2: 2.19 m/s2.19\text{ m/s}2.19 m/s
  • Trial 3: 2.25 m/s2.25\text{ m/s}2.25 m/s

Calculate the mean final speed for this release distance. Give your answer to 222 decimal places.

[3]

Movement and position Questions

  1. IGCSE
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  3. /Movement and position