CAIE A Level Mathematics 9709 · Energy, work and power

Energy, work and power: calculation question

2 marksFoundation

A particle of mass 4 kg moves with speed 4 m/s. Find its kinetic energy in joules.

(a)
Calculate the kinetic energy of the particle.
[2]

Work it out, then check it

Your working is checked step by step against the answer key, with method marks, units and carried-forward errors handled the way a mark scheme handles them.

Answer this and get it marked, free

Free account, no card. Three marked written answers a day on the free plan.

How this question is marked

2 marks. Method marks are awarded for correct working even if the final answer is wrong, and a later part can still score if it correctly uses an earlier wrong answer.

More Energy, work and power questions

2 marks · A constant horizontal force of magnitude 20 N moves a body through a distance of 10 m. Calculate the work done by the force.
2 marks · A body of mass 10 kg moves with a speed of 4 m/s. Calculate its kinetic energy.
2 marks · A car travels at a constant speed of 18 m/s. The driving force from the engine is 400 N. Find the power output of the engine.
2 marks · A constant horizontal force of 9 N acts on a body and moves it a distance of 8 m along a straight horizontal surface. Find the work done…
2 marks · A car's engine provides a constant driving force of 400 N when the car is travelling at a constant speed of 20 m/s. Calculate the power…
3 marks · A body of mass 2 kg slides from rest down a smooth slope. The vertical drop from the starting point to the bottom of the slope is 11.25 m…

All Energy, work and power questions

Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.