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

Evaluate the distance the cart travels from 18.0s to 21.0s.

The points are roughly (18.0, 22) and (21.0, 10). The slope/acceleration is constant.

2. Relevant equations

Δx=(v^{2}_{f}−v^{2}_{i})/2a

Δx=0.5at^{2}

Δx=0.5(base)(height)

3. The attempt at a solution

I used the first equation as:

Δx=(v^{2}_{f}−v^{2}_{i})[itex]\overline{}2a[/itex]

=(22^{2}−10^{2})/2(-4) = -48 m

Δx=0.5at^{2}= 0.5(-4)(9) = -18 m

Both of those were wrong along with the last equation (which also equaled -18 m). I really need help!

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# How to determine acceleration from one point to another on a velocity vs time graph

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