A tennis ball moving horizontally to the left at 40 m/s hits a racket and rebounds horizontally to the right at 30 m/s. If the mass of the ball is 100 grams, find the impulse of the force (in kg-m/s) exerted on the ball by the racket.
- A. 1
- B. -1
- C. 7
- D. 12
The impulse of the force exerted on the ball by the racket is 7 kg-m/s.Solution: