Asked by Mike

A car slows from 22 m/s to 3 m/s with an acceleration of -2.1m/s2. How long does this take?
Answered by Damon
average acceleration a = change in velocity/change in time
-2.1 = (3-22)/t
-2.1 = -19/t
t = 19/2.1
Answered by Suzie
A race car traveling at +44m/s is accelerated to a velocity of +22 m/s over an 11 s interval. What is the displacement during this time?
Answered by Damon
average speed = 33 m/s
33 * 11 meters
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