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murzikaleks [220]
3 years ago
6

A rock has a mass of 8.0 kilograms falls 5 meters.

Physics
1 answer:
Liono4ka [1.6K]3 years ago
3 0

Answer:

A. 392J

B. 392J

C. 9.899m/s

Explanation:

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An object of mass 4kg is moving along a horizontal plane. If the coefficient of kinetic friction is 0.2 find the friction force
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Answer:

The friction force acting on the object is 7.84 N

Explanation:

Given;

mass of object, m = 4 kg

coefficient of kinetic friction, μk = 0.2

The friction force acting on the object is calculated as;

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where;

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F = 0.2 x 4 x 9.8

F = 7.84 N

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