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Answer on Mechanics | Relativity Question for Peter Dillon

Question #901
A car begins braking at 50 km/h and comes to a complete halt in 10s ; what was the acceleration (in standard units) over this period?
Expert's answer
By the equation of the motion:
v = v0 - at;
50km/h = 13.89 m/sec;
0 = 13.89 - 10a;
a = 1.389 m/sec2

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