Showing posts with label questions. Show all posts
Showing posts with label questions. Show all posts

Wednesday, April 21, 2010

Interesting questions

Answer the questions and you will be given a prize.

A car starts from rest and travels for 10 seconds with a constant acceleration of 3.0metre per second squared . The driver then applies the brakes causing a constant negative acceleration of -4.0 metre per second squared . Assuming the brakes are applied for 2.0 seconds:

a.How fast is the car going at the end of braking?
b.How far has the car gone at the end of braking?