The answer is d! I’m happy to help :)
1km=10^3 m,1km^3=10^9cubic metres answer is 1.4x10^18cubic meters
Answer: reaction force = -558N
Explanation:
w = f = 558N
since action force and reaction force are equal in magnitude and opposite in direction,
reaction force = -(f)
reaction force = -558N
if that helps.