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ch3570r
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I've spent the past two hours or so working on some homework problems, and now I'm stuck on one question:
"When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 5.00 m. A child, who is holding the same gun in a horizontal position, is also sliding down at a 45.0degree incline at a constant speed of 2.00 m/s. If the child fires the gun when it is 1.00 m above the ground and the water takes 0.329 s to reach the ground, how far will the water travel horizontally?"
The answer is 4.11m, but I don't know how to get that.
My knowns:
Y = 1
X = 5
45 degrees
Vx = 2m/s
t = .329(s)
Change in X = ??
Equations (▲ = change in : Ø = degree: G = Gravity 9.8m/s)
▲Y = Vi*sinØ-G*▲t
Vy = Vi*sinØ
▲x = Vi*cosØ-▲t
Vx = Vi*cosØ
Vi^2 = (g*▲x)/(2*sinØ*cosØ)
Anyone have any ideas?
"When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 5.00 m. A child, who is holding the same gun in a horizontal position, is also sliding down at a 45.0degree incline at a constant speed of 2.00 m/s. If the child fires the gun when it is 1.00 m above the ground and the water takes 0.329 s to reach the ground, how far will the water travel horizontally?"
The answer is 4.11m, but I don't know how to get that.
My knowns:
Y = 1
X = 5
45 degrees
Vx = 2m/s
t = .329(s)
Change in X = ??
Equations (▲ = change in : Ø = degree: G = Gravity 9.8m/s)
▲Y = Vi*sinØ-G*▲t
Vy = Vi*sinØ
▲x = Vi*cosØ-▲t
Vx = Vi*cosØ
Vi^2 = (g*▲x)/(2*sinØ*cosØ)
Anyone have any ideas?
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