Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

A car, moving at 60 mph, comes to rest in 5s. What was the average deceleration of that car?

1 Answer

A. S. Adikesavan

Apr 19, 2016

1/300 mile/#s^2# = 176'#s^2#

Explanation:

Use
Final velocity = initial velocity + acceleration X time.

Average deceleration is the negative of uniform deceleration in the formula.

Maintain parity in time unit..
60 m/h= 60/3600 mile/s=1/60 mile/s

So, #0 = 1/60 +5 a#.
Acceleration a =# -1/300# mile/#s^2=-(5280/300)#'/#s^2=-#176'/#s^2#. .
Deceleration is 176'/#s^2#..

Related questions

See all questions in Average Rate of Change Over an Interval

Impact of this question

1352 views around the world

You can reuse this answer
Creative Commons License