Answer:
B. 6.3 x 10² Joules
Explanation:
Work is the product of force and distance.
w = F x d
where w is the work, F is the force and d is the distance.
Given,
F = 70 N, N or Newton is the SI unit of force
d = 9.0 m, m is the SI unit of distance
Plugging the number in the work equation we have,
w = 70 N x 9.0 m = 630 J
, Joules is the SI unit of work
Expressing 630 J in scientific notation we get, 6.3 x 10² J
