A car is traveling to the left, which is the negative direction. The direction of travel...
A car is traveling to the left, which is the negative direction. The direction of travel remains the same throughout this problem. The car's initial speed is 24.1 m/s, and during a 8.47 -second interval, it changes to a final speed of (a) 27.1 m/s and (b) 11.2 m/s. In each case, find the acceleration (magnitude and algebraic sign).
Homework Answers
a = delta v / delta t
a = -27.1 m/s - (-24.1) / 8.47s
= -0.354 m/s2 [a is directed left]
------------------------------
a = -11.2m/s - (-24.1 m/s) / 8.47 s
= 1.523 m/s2 [a is directed right]
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