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

The given data is a graph depicting the distance (km) that a bus travels over 3.5 hours. The trip is broken up into three linear segments. I am supposed to find the average acceleration over the entire trip in km/hr^2. I am told that the answer will be negative.

Edit: The graph I have been given hasn't been made easy to read. The numbers I give below don't coincide with the ones I used when I originally calculated the velocity and acceleration. I'm recalculating those numbers now and attempting to find the solution again.

Segment 1 (from rest): 25 km in 1 hour

velocity: 25 km/hr

avg. acceleration: 25 km/hr^2

Segment 2: 7.25 km in 1.25 hours

velocity: 6 km/hr

avg. acceleration: -15.2 km/hr^2

Segment 3: -5 km in 1.25 hours

velocity: -4 km/hr

avg. acceleration: -5.714 km/hr^2

2. Relevant equations

(Unknown)

3. The attempt at a solution

(25-15.2-5.714)/3 = 1.362 km/hr^2

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

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: Finding average acceleration by combining constant velocity vectors

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