Question

A 60.0 kg object is moving east at 8.00 m/s, and then slows down to 4.00 m/s. How much work was done? a.)‚1,440 J b.)‚480 J c.)1,440 J d.)2,880 J

Answer 1

w=F*s =m*a*s=m*u^2-v^2/2=60*(64-16)/2=1440J