Question : A force of (10î− 3ĵ+ 6k̂) N acts on a body of mass 100 g and displaces it from (6î+ 5ĵ− 3k̂) m to (10î−2ĵ+ 7k̂) m. The work done is
(A) 21 J
(B) 121 J
(C) 361 J
(D) 1000 J
Answer : option (B)
Solution :

Question : A force of (10î− 3ĵ+ 6k̂) N acts on a body of mass 100 g and displaces it from (6î+ 5ĵ− 3k̂) m to (10î−2ĵ+ 7k̂) m. The work done is
(A) 21 J
(B) 121 J
(C) 361 J
(D) 1000 J
Answer : option (B)
Solution :