Super ball Acceleration question

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Homework Help Overview

The problem involves a Super Ball's collision with a wall, focusing on calculating the average acceleration during the contact time with the wall. The context is within high school physics, specifically dealing with concepts of velocity and acceleration.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the need to show effort before receiving help, with one suggesting a systematic approach of listing data and identifying relevant equations. Another participant attempts to apply the average acceleration formula but expresses confusion over the correct calculation.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the treatment of velocities as vector quantities, but there is no explicit consensus on the correct approach or answer yet.

Contextual Notes

Participants mention the importance of understanding the direction of velocities and the need for clarity in calculations. There is a reference to homework rules that require showing effort before receiving assistance.

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A 45.0 g Super Ball traveling at 30.0 m/s bounces off a brick wall and rebounds at 17.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.50 ms, what is the magnitude of the average acceleration of the ball during this time interval? (Note: 1 ms = 10-3 s.)


please explain...i don't get it!
 
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As you have been told previously, you must show some effort in solving the question yourself before we can help you.
 
I know everyone doesn't have natural talent in physics but just look at the basics first.

Im 15 doing high school physics and i can get it.

First list data, then see relevant equations should be pretty basic from there.

Always do that with all questions,, list data,, look for equations,, sometimes it also helps to draw diagrams if that makes it clearer for you.
 
well i know that the average acceleration equation is the change of velocity/change in time

so i thought it would be

17m/s-30m/s
____________

.0045 s


but i can't seem to get the right answer..i think I am missing something?
 
velocities are vector quantities.. so 17-(-30) because the ball is changing direction
then divide by the time
 
What is the correct answer?
 

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