1.

The work done by a force on a body moving from (1,4) m to (3,8) m is 44 J. The force can be :A. `8 hat i+6hatj N`B. `8 hati-8 hatjN`C. `6 hati-8 hatj N`D. `6 hati+8 hatj N`

Answer» Correct Answer - D
`W=vec(F).vec(S)`
`44=vec(F)(2hati+4hatj)`
by hit and trial `(6hati+8hatj).(2hati+4hatj)=44 J`


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