Final answer:
The statement is false; Newton's third law of motion states that the forces are equal in magnitude but the effects differ due to the mass difference.
Step-by-step explanation:
The statement that the attractive force a 70 kg person exerts on Earth is much smaller than the force Earth exerts on the person is false. According to Newton's third law of motion, every action has an equal and opposite reaction. This means that the gravitational force the Earth exerts on a person is exactly equal in magnitude to the force that the person exerts on the Earth. However, because Earth's mass is significantly greater, the acceleration caused by this force on the Earth is imperceptible compared to the acceleration of the person towards the Earth. Therefore, while the forces are equal, the resulting effects are vastly different due to the difference in mass between the Earth and the person.