A tennis ball with a speed of 10.3 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 7.41 m/s. If the ball is in contact with the wall for 0.0123 s, what is the average magnitude of acceleration of the ball while it is in contact with the wall?
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Do you understand?
Yes i understand I got 234.9 m/s^2. But I tried it on my online homework and it said I was wrong. That was the same equation i tried my first time with.