Asked by kiley

a brick has mass of 1.2 kg. a force of 5.4 N is needed to move the brick along the floor with a constant velocity. what is the coefficiant of friction?
Answered by bobpursley
constant velocity means no net accelerating force, which means the pushing force of 5.4N is equal to the opposing force, friction.

Frictionforce=mu*mg
solve for mu.
Answered by Jonathan
A car moves at 12 m/s and coast up a hill with a uniform acceleration of -1.6 m/s^2..What is its displacment after 6 sec.? What is its displacment after 9 sec.?
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