Final answer:
Superman moves forward approximately 186.88 meters in the x-direction before hitting the ground.
Step-by-step explanation:
To solve this problem, we can use the equation:
x = vt
Where:
- x is the horizontal distance
- v is the horizontal velocity of Superman
- t is the time it takes for Superman to hit the ground
Given that Superman is flying horizontally at a speed of 20 m/s, we can assume that his horizontal velocity remains constant. To find the time it takes for Superman to hit the ground, we can use the equation:
t = √(2h/g)
Where:
- h is the height
- g is the acceleration due to gravity
Substituting the given values, we have:
t = √(2 * 450 m / 9.8 m/s2)
t = √91.84 s
Now, we can substitute the values of v and t into the equation for x:
x = 20 m/s * √91.84 s
x ≈ 186.88 m
Therefore, Superman moves forward approximately 186.88 meters in the x-direction before hitting the ground.