# Using the Kinematics Spreadsheet

# Example 3

##

Question :

"A car is initially moving at 20 m/s when the
driver applies her brakes. If the brakes can decelerate the car at
6 m/s^{2}, how long will it take the car to stop, and how
far will it travel in this time?"

## Solution:

To solve the problem, you need th set the initial velocity of the
car (in cell B7) to 20 m/s and the acceleration of the car (in cell
B3) to -6 m/s^{2}.

Notice that the car stops sometime between 3 and 4 seconds after
the brakes are applied. You can decrease the time interval (in cell
B4) to get a more precise time. To extend the spreadsheet, use "Fill
Down" from the Calculate menu.

last update September 15, 2000 by JL
Stanbrough