How Do You Calculate Work and Distance in These Physics Problems?

[moela]

1. A car changes velocity from 25m/s to 8.0m/s. If the average force applied to the brakes is 16000N, how far does the 2300kg car go in this time?

2. How much work is done if a 75kg runner speeds up from 1.2 m/s to 4.0m/s in 1.7s? How much extra work is done if there is a force of friction against the runner of 26N?

 

[mbrmbrg]

Hey, moela, welcome aboard!

You need to show work before we can help.

 

[husky88]

You can start off by calculating what you can.
For example if you know the mass and the speed what can you find out?