Solution Found!
Answer: A Tennis Serve. In the fastest measured tennis
Chapter 2, Problem 22E(choose chapter or problem)
Problem 22E
A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at 73.14 m/s. A served tennis ball is typically in contact with the racquet for 30.0 ms and starts from rest. Assume constant acceleration. (a) What was the ball’s acceleration during this serve? (b) How far did the ball travel during the serve?
Questions & Answers
QUESTION:
Problem 22E
A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at 73.14 m/s. A served tennis ball is typically in contact with the racquet for 30.0 ms and starts from rest. Assume constant acceleration. (a) What was the ball’s acceleration during this serve? (b) How far did the ball travel during the serve?
ANSWER:
Solution 22E
Step 1
The acceleration of an object is given by
Where and are the final and initial velocities and is the time interval during which the change in velocity occurs.
In the given problem we have , and
So, using the above equation we can write that
Hence the acceleration of the ball during serve is 2438 m/s2.