# Answer on Mechanics | Relativity Question for Ryan Rigby

Question #2260

In baseball, when a pitcher throws a ball, at what point does it reach it's fastest speed? Is it the instant it leaves his hand? Or is it some other point?

Expert's answer

System of equations that describe the movement of ball:

x = V

y = V

V

V

V = √(V

As we see V

x = V

_{0x}t = V_{0}cosα*ty = V

_{0y}t-g t^{2}/2 = V_{0}sinα*t - g t^{2}/2V

_{x}= V_{0x }= V_{0}cosαV

_{y}= V_{0y}- gt = V_{0}sinα - gtV = √(V

_{x}^{2}+ V_{y}^{2})As we see V

_{y}decrease with time. So the magnitude of velocity also decrease. Velocity is maximum at t=0 and equals V_{0}.Need a fast expert's response?

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