The subscript tells you how many atoms there are of the element it is to the right of. Here it means there are 3 oxygen atoms in the molecule. If there is a group of atoms in parenthesis, it applies to each atom in that grouping.
C) is the correct answer.
Answer:
53 kg m/s
Explanation:
Momentum = mass × velocity
p = mv
p = (8.9 kg) (6.0 m/s)
p = 53.4 kg m/s
Rounded to 2 significant figures, the momentum is 53 kg m/s.
B. it accelerates at a rate of 9.8m/s/