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stira [4]
3 years ago
7

19. A stone has a mass of 390 g and a density of 2.7 g/cm3.

Physics
1 answer:
g100num [7]3 years ago
6 0

Answer:

B

Explanation:

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Two people push on a boulder to try to move it. The mass of the boulder is 815 kg. One person pushes north with a force of 65 N.
ivanzaharov [21]

Answer:

0.095 m/s^2

Explanation:

As the 2 force directions are perpendicular (North vs West), we can calculate the magnitude of the net force using the following equation

F = \sqrt{65^2 + 42^2} = 77.4 N

Assuming negligible friction, from here we can calculate the acceleration in accordance to Newton's 2nd law of motion

a = F/m = 77.4 / 815 = 0.095 m/s^2

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3 years ago
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Answer:

Independent.

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4 years ago
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3 0
3 years ago
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fredd [130]

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I think it's Experimental

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