Sagot :
Answer:
The foot is placed on a step and pushes down, making the step exert an equal reaction but in the opposite direction and raise the body to the next and so on.
Explanation:
pa brainliest
Answer:
The foot is placed on a step and pushes down, making the step exert an equal reaction but in the opposite direction and raise the body to the next and so on.
Explanation:
pa brainliest