A body is moving at 70km/h and has a mass of 130kg, calculate its maximum kinetic energy.

Firstly, the speed is not given in SI units, this is modified by changing the units from km/h to m/s by the following relationship; 70km/h = (70000/3600)m/s. Once this is complete the equation for kinetic energy is used, KE=(mv^2)/2 where m is the mass of the body, v is the speed of the body and KE is the kinetic energy of the body. The values derived and given in the question are then substituted into the equation to obtain a maximum kinetic energy of 2.46x10^4 joules.

JI
Answered by Joe I. Physics tutor

2788 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

How do I derive equations for Time of Flight and Range in Parabolic Motion?


If two cars are moving, labelled car A and car B. Car A moves at 15 m/s and B at 10 m/s but car B also accelerated at 2 m/s/s. If the two both travel for ten seconds, which car will travel further?


How do you combine resistors is series and parallel?


A stone is thrown horizontally at 5m/s from a platform 10m above ground. Find time till impact with ground.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning