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Y_Kistochka [10]
3 years ago
13

Superman strikes a golf ball on the ground at a 38 degree angle above the horizontal at 147 m/s. What is the maximum height the

golf ball reaches?
255 m


418 m


687 m


1103 m
Physics
1 answer:
tino4ka555 [31]3 years ago
5 0

The ball is hit with an initial vertical velocity of

(147 m/s) sin(38º) ≈ 90.5 m/s

Recall that

<em>v </em>² - <em>u </em>² = 2 <em>a</em> ∆<em>y</em>

where <em>u</em> and <em>v</em> are initial and final velocities, respectively; <em>a</em> is acceleration; and ∆<em>y</em> is displacement.

Vertically, the ball is in freefall, so it is only subject to acceleration due to gravity, with magnitude <em>g</em> = 9.80 m/s² in the downward direction. At its maximum height, the ball has zero vertical velocity (<em>v</em> = 0) and the displacement is equal to the maximum height, so

0² - (90.5 m/s)² = 2 (-<em>g</em>) ∆<em>y</em>

∆<em>y</em> = (90.5 m/s)² / (2<em>g</em>)

∆<em>y</em> ≈ 418 m

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