Question

you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration? A) 2 m/s ^2 B) 3 m/s ^2 C) 5 m/s ^2 D) 4 m/s ^2

Answer 1

Acceleration is to change in speed divided by the time for the change. Change in speed is end speed minus started speed.  

3m/s-1m/s and equals to 2m/s.

The answer should be A. (2m/s^2.)

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Answer 2

The answer is A. Because 3 m/s - 1 m/s is 2 m/s In 1 s