Question

If F=8i-2j and r= 6i+8k then F.r is equal to:
a.6
b.8
c.48
d.32​

Answer 1

Answer:

C . 48 I think it is right

Answer 2

Answer:

c) 48

Explanation:

F= 8i-2j+0k, r= 6i+0j+8k

than F.r is

F.r=8*6+(-2)*0+0*8

F.r = 48