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Vika [28.1K]
3 years ago
12

PLEASE HELP ME!!!

Physics
1 answer:
s344n2d4d5 [400]3 years ago
3 0

Answer:

I think is B. sound, nuclear, electrical

but if I wrong then I am so sorry

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A gun has a muzzle speed of 150 m/s. Find two angles of elevation that can be used to hit a target 800m away.
lorasvet [3.4K]

Answer:

Explanation:

u =  150 m/s

R = 800 m

The formula for the horizontal range is

R=\frac{u^{2}Sin2\theta }{g}

where, θ is angle of projection.

800=\frac{150^{2}Sin2\theta }{9.8}

Sin2θ = 0.348

2θ = 20.4°

θ = 10.2°

The range is same for the complementary angles.

So, the other angle is 90 - 10.2 = 79.8°

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