High School

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During a race, a runner runs at a speed of 6 m/s. Two seconds later, she is running at a speed of 10 m/s.

What is the runner’s acceleration?

Show your work.

Answer :

v o = 6 m/s,
t = 2 s
v = 10 m/s
v = v o + a t
a t = v - v o
a = ( v - v o ) / t
a = ( 10 m/s - 6 m/s ) / 2 s = 4 m/s / 2 s = 2 m/s²
Answer:
The runner`s acceleration is 2 m/s².

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