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VARVARA [1.3K]
4 years ago
11

A busy chipmunk runs back and forth along a straight line of acorns that has been set out between his burrow and a nearby tree.

At some instant the little creature moves with a velocity of -1.45 m/s. Then, 2.55 s later, it moves at the velocity 1.85 m/s. What is the chipmunk\'s average acceleration during the 2.55-s time interval? a) 0.16 m/s
b) 0.73 m/s
c) 1.29 m/s
d) 2.28 m/s
Physics
1 answer:
Ugo [173]4 years ago
8 0

Answer:c

Explanation:

Given

At some instant creature moves with velocity of -1.45 m/s

and after 2.55 sec it moves at the velocity of 1.85 m/s

and we know acceleration=\frac{change\ in\ velocity}{time}

a=\frac{1.85-(-1.45)}{2.55}

a=\frac{3.3}{2.55}

a=1.29 m/s^2

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