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Edexcel A-Level Physics AS 1.3.18 Kinetic Energy Questions

Practise Edexcel IAL Physics 1.1.18 by calculating kinetic energy and speed, comparing energy changes and converting J and eV.

Syllabus
Pearson Edexcel International Advanced Subsidiary/Advanced Level
Course
Physics XPH11/YPH11
Level
AS

Exam points

  • calculate kinetic energy or speed using Ek=1/2mv² in particles, vehicles or collisions
  • compare initial and final kinetic energy to find energy loss or useful work done
  • convert between joules and electronvolts when using kinetic energy of electrons or ions

Edexcel A-Level Physics AS 1.3.18 Kinetic Energy Questions question 1

[Maximum number: 3]

In a high jump competition, athletes jump over a bar.
An athlete has a weight of 680 N .

The athlete moves horizontally as he passes over the bar.

The kinetic energy of the athlete is 409 J .

Show that the athlete has a horizontal speed of about 3.4 m s^-1.

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