Asked by ruthwik
                a force is applied to a body of mass 0.9 kgs that is at rest the force is applied for a duration of 5 sec and as a result the body covers a distance of 250 m find the magnitude of force
            
            
        Answers
                    Answered by
            plato
            
    since the force applied gives the body kinetic energy from rest:fd=1/2mv^2           d=1/2at^2  250=1/2a(5)(5) a=20m/s^2       since body start from rest u=0:a=v/t  20=v/5 v=100m/s  from the equation:f(250)=1/2*0.9*100^2  250F=4500 F=18N
    
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