Final answer:
The impulse imparted by the racket to the ball is calculated by multiplying the average force by the time interval. The given force is 25 N and the time is 0.17 seconds, resulting in an impulse of 4.25 Ns.
Step-by-step explanation:
The student is asking about the concept of impulse in physics, which is the product of the average force applied to an object and the time duration over which it is applied. The impulse imparted by the racket can be calculated using the formula: impulse (J) = force (F) × time (t).
In this scenario, the tennis racket strikes the ball with an average force of 25 N for 0.17 seconds. Therefore, the impulse is:
J = 25 N × 0.17 s
J = 4.25 Ns
This means that the impulse imparted by the racket is 4.25 Newton-seconds (Ns).