What is his pitching speed? As you think about it, you’re not sure he threw the

Question

What is his pitching speed? As you think about it, you’re not sure he threw the ballexactly horizontally. As you watch him throw, the pitches seem tovary from 5° below horizontal to 5° above horizontal. Whatis the range of speeds with which the ball might have left hishand? Enter the minimum and the maximum speed of the ball. A baseball player friend of yours wants to determine hispitching speed. You have him stand on a ledge and throw the ballhorizontally from an elevation 6.00 m above theground. The ball lands 20.0 maway. What is his pitching speed? As you think about it, you?re not sure he threw the ballexactly horizontally. As you watch him throw, the pitches seem tovary from 5 degree below horizontal to 5 degree above horizontal. Whatis the range of speeds with which the ball might have left hishand? Enter the minimum and the maximum speed of the ball.

Explanation / Answer

let time be t, we have: h = 6.00m = (1/2)gt2 =>t = (2*6.00m/9.8m/s2) = 1.11 s let the speed be v, we have: d = vt = 20.0m =>v = 20.0m/1.11s = 18.02 m/s . =>t = (2*6.00m/9.8m/s2) = 1.11 s let the speed be v, we have: d = vt = 20.0m =>v = 20.0m/1.11s = 18.02 m/s .

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