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kondaur [170]
4 years ago
5

Explain why the friction force between two surfaces increases if the force is pushing the surfaces together increases .

Physics
1 answer:
Nady [450]4 years ago
8 0
the friction is becouse of the microscopic bumps between 2 surfaces and matters,it's a contact force.so with pushing them tge contacts between the bumps increases so the force will increase to
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The correct answer to this would be letter:  

A. Earth’s volcanoes

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Answer:

a)t = H/v_0

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b) The first ball is at its highest point when v = 0. That is

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After this time, the 2 balls would have traveled through a distance of

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h_2 = gt^2/2 = v_0^2/2g

SinceH = h_1 + h_2 we can solve for H

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