Question

9. A mosquito net over a 7 ft x 4 ft bed is 3 ft high. The
net has a hole at one corner of the bed through which
a mosquito enters the net. It flies and sits at the
diagonally opposite upper corner of the net. (a) Find the
magnitude of the displacement of the mosquito. (b)
Taking the hole as the origin, the length of the bed as
the X-axis, its width as the Y-axis, and vertically up as
the Z-axis, write the components of the displacement
vector.​

Answer 1

ANSWER: a)root74

                 b)7icap + 4jcap + 3kcap

                  a)  vecOP= 7icap + 4jcap + 3kcap

                      |vecOP| = roo 7^2 + 4^2 + 3^2 = root74

                   b) vecOP = 7icap + 4jcap + 3kcap