A force of 150 N is continuously applied to an object with a mass of 11 kg over a distance of 2.5 m. The object slides over a surface with a coefficient of kinetic friction of .3.How fast is the object moving immediately after the force ceases to be applied?

Final velocity will be 7.31 m/sec

Explanation:

We have given applied force F = 150 N

Mass of the object m = 11 KG

Distance traveled by the object s = 2.5 m

Coefficient of kinetic friction

Acceleration due to gravity

So frictional force applied on the object

So net force = 150-32.34 = 117.66 N

As work done us equal to

So work done =

Now according to work energy theorem work done is equal to change in kinetic energy

So

v =7.31 m/sec

So velocity final velocity will be 7.31 m/sec

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