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5. In 1947 Bob Feller, a pitcher for the Cleveland Indians, threw a baseball across the
plate at 98.6 mph or 44.1 m/s. For many years this was the fastest pitch ever measured.
If Bob had thrown the pitch straight up, how high would it have gone?

Respuesta :

The maximum height reached by the ball is 99.2 m

Explanation:

When the ball is thrown straight up, it follows a free fall motion, which is a uniformly accelerated motion with constant acceleration ([tex]g=9.8 m/s^2[/tex] towards the ground). Therefore, we can use the following suvat equation:

[tex]v^2-u^2=2as[/tex]

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement

In this problem, we have:

u = 44.1 m/s is the initial vertical velocity of the ball

v = 0 is the final velocity when the ball reaches the maximum height

s is the maximum height

[tex]a=-g=-9.8 m/s^2[/tex] is the acceleration of gravity (downward, so negative)

Solving for s, we find the maximum height reached by the ball:

[tex]s=-\frac{u^2}{2a}=-\frac{44.1^2}{2(-9.8)}=99.2 m[/tex]

Learn more about free fall:

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