Suppose you are hitting a tennis ball with a racket. Which of the following statements is true? a. The force of the racket pushing the ball is greater than the force of the ball pushing the racket. b. The force of the ball pushing the racket is greater than the force of the racket pushing the ball. c. The force of the ball pushing the racket is the same as the force of the racket pushing the ball. d. The relationship between the force of the ball pushing the racket and the force of the racket pushing the ball depends on the weight of the racket and the speed of the ball

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!