Question

an athlete accelerate at 1.9 meter per second squared for 2.2 second at the beginning of the race.what is the speed of the athlete at the end of 3000 m race?

Answer 1

ANSWER

3.8m/s

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1.9 m/s^2 means that the velocity increases by 1.9 m/s every second. Think of m/s^2 as m/s/s.

We can multiply 1.9 m/s^2 by 2 s to get 3.8 m/s.

That is the answer. The runner's speed after 2 seconds is 3.8 m/s.