Baseball physics question?

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Samantha K

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. A left-handed pitcher at sea level throws a baseball at a 45o angle with an initial speed of 19 m/s. The time for the ball to reach its highest point can be found from the data and known constants using which equations? Solve for the time.
 
Vertical velocity = 19 sin45

Highest point is reached when the velocity reduces to 0, from:
v = u - gt, with v = 0;
t = u / g = 19 sin45 / 9.8 = 1.37 s
 
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