A Golf Ball Is Dropped from a Height of 1

question 40

Multiple Choice

A golf ball is dropped from a height of 1.0 m onto a concrete floor.The velocity of the ball immediately before hitting the floor is 4.43 m/s downward.The ball contacts the floor for 0.940 ms (check out R.Cross,Am.J.Phys.,Vol.67,No.3,March 1999) and leaves the floor traveling upward at 3.96 m/s.The average acceleration of the golf ball while it is in contact with the floor is

• A)9.81 m/s².
• B)8.93 * 10³ m/s².
• C)500 m/s².
• D)4.71 * 10³ m/s².
• E)4.21 * 10³ m/s².

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