(II) At the instant a race began, a 65-kg sprinter exerted a force of 720 N on the

Chapter 4, Problem 30P

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QUESTION:

Problem 30P

(II) At the instant a race began, a 65-kg sprinter exerted a force of 720 N on the starting block at a 22° angle with respect to the ground. (a) What was the horizontal acceleration of the sprinter? (b) If the force was exerted for 0.32 s, with what speed did the sprinter leave the starting block?

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QUESTION:

Problem 30P

(II) At the instant a race began, a 65-kg sprinter exerted a force of 720 N on the starting block at a 22° angle with respect to the ground. (a) What was the horizontal acceleration of the sprinter? (b) If the force was exerted for 0.32 s, with what speed did the sprinter leave the starting block?

ANSWER:

Solution 30P

Step 1 of 4

(a) To find the horizontal acceleration of the sprinter. (b) To find the speed of the sprinter when it leaves the starting block.

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