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Jlenok [28]
3 years ago
14

A 0.45 kg rock is projected from the edge of the top of a building with an initial velocity of 11.1m/s at an angle of 50 degrees

above the horizontal. Due to gravity, the rock strikes the ground at a horizontal distance of 16.9m from the base of the building. How tall is the building?
Physics
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

bro just go to an easier class

Explanation:

#nerd

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Answer:

x_1 = 3.74m

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a_m = \dfrac{F}{m}

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a_m = 0.12\ m/s^2

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\dfrac{1}{2}a_ct^2+ \dfrac{1}{2}a_mt^2 = 25

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(0.12+0.68)t^2=50

t = \sqrt{\dfrac{50}{0.8}}

t = 7.90 s

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x_1 = 0.5\times 0.12 \times 7.90^2

x_1 = 3.74m

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