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coldgirl [10]
3 years ago
14

Scientist have been able to determine the composition of Earth's layers by:

Physics
1 answer:
Pie3 years ago
4 0
D is the correct answer
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A block of mass 4 kilograms is initially moving at 5m/s on a horizontal surface. There is friction between the block and the sur
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• Net vertical force on the block:

∑ <em>F</em> = <em>n</em> - <em>w</em> = 0

(<em>n</em> = magnitude of normal force, <em>w</em> = weight)

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• Net horizontal force:

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