The correct answer is 78.4 N
The coefficient of friction is the measure of the amount of friction that exists between any two bodies.
Here, we are given,
Force = 196 N
Coefficient of Kinetic friction μ(k)= 0.4
Kinetic friction is directly proportional to the magnitude of force of friction and thus can be calculated as -
= μ x N
= 0.4 x 196
= 78.4 N
Therefore, the magnitude of force of friction on normal force of 196 N and coefficient of kinetic friction 0.4 is 78.4 N.
To learn more about friction, refer: brainly.com/question/13000653
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No additional force is required because it's already going downhill
First one is B, second one is A
Answer:
E=mc2
Explanation:
It explains that in their interiors, atoms fuse together, creating energy.
any object with mass exerts gravity