3. A 50-gram ball traveling at 25 m/s is bounced off a brick wall and(adsbygoogle = window.adsbygoogle || []).push({});

rebounds at 22 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.5 ms, what is the average acceleration of the ball during this time interval?

so is this as simple as 25+22= 47 then, 47/2= 23.5 m/s/s ?

im confused with the wording of this question. Is it asking what is the average velocity of the ball during the 3.5 seconds while its in contact with the wall? if so, is it just an average of the entry velocity and the exit velocity? (sorry i dont know the real terms). Im also guessing that the answer would be in M/s/s but im not sure how to do the conversion, this is my first physics class.. any help is appreciated

**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: Is this problem really this simple?

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