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3 years ago

Kinetic friction is affected by the weight of the object. TrueFalse

Physics

2 answers:

monitta3 years ago

7 0

Answer:

The answer is True. Friction is indeed affected by weight.

Explanation:

hjlf3 years ago

6 0

Answer;

The above statement is True

Kinetic friction is affected by the weight of the object.

<h3><u>Explanation;</u></h3>

Kinetic friction is a force that acts between moving surfaces. An object that is in motion over a surface experiences a force in the opposite direction to the direction of movement.
The equation for kinetic friction is given by the formula;

F= coefficient of friction * Normal force.

Normal force is the force of the table pushing back on the block and can be calculated by formula;

F = mass* acceleration due to gravity.

Therefore, the weight of an object determines its kinetic friction.

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Answer:

The answers to the questions are as follows

a) k = 0, P = 0.3

k = 1, P = 0.5

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b) The probability that enough power will be available is 0.5.

Explanation:

To solve the question we write the parameters as follows

Probability that the first power source works = P(A) = 0.4

Probability that the second power source works = P(B) = 0.5

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Therefore the probabilities that exactly 0 source work = 0.3

for k = 1 we have the probability = P(A)(1-P(B)) + P(B)(1-P(A)

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Therefore the probability that exactly 2 sources work = 0.2

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