(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An object moving along a straight line, at constant acceleration covers two equal, consecutive, 13 m long segments, the first one in t 1 = 1.2 s and the second one in t 2 = 2.2 s . What was the magnitude of acceleration? (in m/s^{2}) ,

And what is the speed of the object (m/s) at the beginning of the first segment?

2. Relevant equations

V=(D/T)

if D/2 at V_{1}, D/2 at V_{2}, then

V_{av}= (2V_{1}.V_{2})/V_{1}+V_{2}

acceleration = velocity/time

3. The attempt at a solution

V_{1}= 13/1.2 = 10.83 m/s

V_{2}= 13/2.2 = 5.91m/s

V_{av}= (2x10.83 x 5.91)/10.83 + 5.91 = 7.6

acceleration = 7.6 / 3.4

= 2.24 m/s^{2}

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# Homework Help: Magnitude of acceleration

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