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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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Misha Larkins [42]

Answer:

a) 5 N b) 225 N c) 5 N

Explanation:

a) Per Coulomb's Law the repulsive force between 2 equal sign charges, is directly proportional to the product of the charges, and inversely proportional to the square of  the distance between them, acting along  the  line that joins the charges, as follows:

F₁₂ = K Q₁ Q₂ / r₁₂²

So, if we make Q1 = Q1/5, the net effect will be to reduce the force in the same factor, i.e. F₁₂ = 25 N / 5 = 5 N

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