A tennis ball with a speed of 12.7 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 8 m/s. If the ball is in contact with the wall for 0.01s, what is the average acceleration of the ball while it is in contact with the wall? Answer in units of m/s.
2007-09-09 13:13:54 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Average acceleration is equal to the change in velocity divided by the time.
The change in velocity is 12.7 - (-8) = 20.7 m/s
20.7 / 0.01 = 2070 m/s^2
2007-09-09 15:28:27 · answer #1 · answered by Demiurge42 7 · 0⤊ 0⤋
I've laughed at why the fly on the wall is being so nosy. What the fly on the wal thinks of what I do,when the fly makes it's life by climbing on excrement and feeding on it is laughable in comparison.
2016-05-20 22:17:53 · answer #2 · answered by ione 3 · 0⤊ 0⤋
http://answers.yahoo.com/question/index;_ylt=AqoWefEqBmxWY2EvQDutNhLsy6IX;_ylv=3?qid=20070909152723AANvMAg
2007-09-09 13:18:11 · answer #3 · answered by ;D 2 · 0⤊ 1⤋