(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known dataHi all, the question for revision is; A car of mass 600kg travelling at 45m/s comes to rest in 12m when the brakes are applied. What is the average force exerted by the brakes?

2. Relevant equationsForce = mass x acceleration V^2=u^2 +2as

3. The attempt at a solutionI know I need to work out the acceleration but am having trouble correctly transposing that equation I think its this v^2-u^2 divided by s =2a, its what to do with the 2 to get a on its own, does it then become 1/2 s on the other side?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Calculating acceleration and brake force

**Physics Forums | Science Articles, Homework Help, Discussion**