65% x 70 = 45.5
The mass of oxygen in his body is 45.5 kg
They both have produce oxides, use up oxygen, and release energy as well.<span />
Answer:
The mass of the runner is 75 kg
Explanation:
Recall that the linear momentum is defined as the product of the mass of the object in motion times its velocity: P = m * v
Therefore, for our case we have;
750 kg m/s = m * 10 m/s
solving for the mass (m) we get:
m = 750/10 kg =75 kg
