The initial velocity of a 4.0-kg box is 11 m/s, due west. after the box slides 4.0 m horizontally, its speed is 1.5 m/s. determine the magnitude and the direction of the non-conservative force acting on the box as it slides.

F = - 59.375 N

Explanation:

GIVEN DATA:

Initial velocity = 11 m/s

final velocity = 1.5 m/s

let force be F

work done =  mass* F = 4*F

we know that

Change in kinetic energy = work done

kinetic energy =

kinetic energy = = -237.5 kg m/s2

-237.5 = 4*F

F = - 59.375 N

the closer the planet is to the sun, the larger the gravity

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.