Afactory worker moves a 21.0 kg crate a distance of 4.50 m along a level floor at constant velocity by pushing horizontally on it. the coefficient of kinetic friction between the crate and the floor is 0.300. what magnitude of force must the worker apply? express your answer with appropriate units.

61.803 Newtons

Explanation:

m = Mass of crate = 21 kg

= Coefficient of kinetic friction between the crate and the floor = 0.3

g = Acceleration due to gravity = 9.81 m/s²

Force

So, the magnitude of force must the worker apply is 61.803 Newtons

explanation:

newton's third law, for every action there is an equal and opposite reaction.

in physics zero. in muscle fatigue could be high