Which action–reaction pair is directly responsible for the forward motion of a person…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which action–reaction pair is directly responsible for the forward motion of a person who is walking on a level road?
(a) Person pushes the air backward; air pushes the person forward
(b) Person pushes the ground backward; ground pushes the person forward
(c) Person pushes the ground downward; ground pushes the person upward
(d) Person pushes the ground forward; ground pushes the person backward