A sports car moving at constant velocity travels 110 m in 5.1 s .
If it then brakes and comes to a stop in 4.5 s , what is the magnitude of its acceleration (assumed constant) in m/s2?
Express the answer in terms of "g's," where g=9.80m/s2.
Given: Distance = 110 m , Time = 5.1 s
Therefore, Initial Velocity = 110 m / 5.1 s = 21.57 m/s
Now we have ,
Initial velocity = 21.57 m/s , Time = 4.5 s , Final velocity = 0 m/s
So, |Acceleration| = | (0 m/s - 21.57 m/s)/4.5 s |
= 4.79 m/s2 = 0.49 g
A sports car moving at constant velocity travels 110 m in 5.1 s . If it...
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