(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!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

**Physics Forums | Science Articles, Homework Help, Discussion**