Kinetic energy, ke
2 marks · EasyA bicycle and its rider have a total mass of 70 kg and are moving with a speed of 5 m/s. Calculate their kinetic energy. Give your answer in joules.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
875 J (±1)
Common mistakes: Forgetting to square the speed; Missing the 1/2 factor
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Substitutes correct values into KE equation.
A1 · 1 mark · Calculates final answer 875 J.
Worked solution