Question

what is friction?write the S.I unit of speed ​

Answer 1

Answer:

Where N is the normal force which is perpendicular to the direction of the applied force and F is the frictional force. As we know the units of force are newton and normal is also a force, hence its unit is also newton. The two forces units will cancel each other. Therefore, the coefficient of friction has no unit.

Explanation:

good afternoon dear hope it will help you follow me and brainlist me please don't forget it

Answer 2

Answer:

• Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces

• the SI unit of speed is metre per second or m/s.

please mark as brainliest