Engineering Board Exam Reviewer · Physics · medium

A vehicle moving at 20 m/s decelerates uniformly at 4 m/s2. What distance does it travel before stopping?

1. 50 m
2. 100 m
3. 80 m
4. 5 m

Answer

A. 50 m

Solution

v2 = v02 - 2as s = v02/(2a) = 400/8 = 50 m.

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