Help me with this please...
Favorites|Homepage
Subscriptions | sitemap
HOME > Physics > Help me with this please...

Help me with this please...

[From: ] [author: ] [Date: 11-09-17] [Hit: ]
Acceleration = -30.56 / 4.5 = -6.79 m/s^2-There are 3,......
The driver of a car traveling at 110 km/h slams on the brakes so that the car undergoes a constant acceleration, skidding to a complete stop in 4.5 s. What is the average acceleration of the car during braking?

-
Average acceleration = change in speed / time

Don't forget to convert to SI units first (i.e. convert speed from km/h to m/s)

110 km/h = 110 x 10^3 m / 3600 s = 30.56 m/s

Acceleration = -30.56 / 4.5 = -6.79 m/s^2

-
There are 3,600 seconds in an hour (60 x 60 = 3600)

Report Abuse

1
keywords: please,this,Help,with,me,Help me with this please...
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .