A force of 310.0 N is used to push a 120 kg 30.0 m horizontally 3.00 s.
(a) Calculate the work done on the mass.
[ ] × kJ
(b) Calculate the power developed.
[ ] kW

Explanation:

We have,

Force acting on the mass is 310 N

Mass, m = 120 kg

Distance covered by the mass is 30 m

Time, t = 3 s

(a) The work done on the mass is given by the product of force and displacement such that,

(b) The rate at which the work is done is called power developed. Its formula is given by :

as technology advances, new experiments often expose problems in accepted theories. c

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-lavira: )