Force vec(F ) = (60 hat(i) +50 hat(j)-3hat(k))Nis applied on a particle , the value of velocity is vec(v) =(2hat(i)+4hat(j)+5hat(k)) m/s , then power will be ……. W.

Force vec(F ) = (60 hat(i) +50 hat(j)-3hat(k))Nis applied on a particl

1.	Force vec(F ) = (60 hat(i) +50 hat(j)-3hat(k))Nis applied on a particle , the value of velocity is vec(v) =(2hat(i)+4hat(j)+5hat(k)) m/s , then power will be ……. W.
Answer» 305 450 45 90 Solution :`P = VEC(F) .vec(v) = (60 hat(i)+15 hat(J)-3HAT(k)).(2hat(i)-4hat(j)+5hat(k))` `= 120 - 60 - 15` = 45 W .