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The distance X moved by a body of mass 0.5 kgunder the action of a force varies with time t asxm) = 3f+ 4t + 5 (here t is expresed in second).What is the work done by the force in firs2 seconds?(1) 20 J(2) 40 J783(3) 50 J(4) 60 J |
| Answer» The distance X moved by a body of mass 0.5 kgunder the action of a force varies with time t asxm) = 3f+ 4t + 5 (here t is expresed in second).What is the work done by the force in firs2 seconds?(1) 20 J(2) 40 J783(3) 50 J(4) 60 J | |