1.why walking up stairs is so much harder than walking down stairs-when we go up, we have to work to overcome the force of gravity, while when we go down, the pull of gravity makes it easier for us.
2.The force of gravity, like all other forces, can cause changes in the speed of objects. As an object falls, its speed will continually increase as Earth's gravity continually pulls it downward. When air resistance is ignored, all objects will speed up at the same rate as they fall.
Answers & Comments
1.why walking up stairs is so much harder than walking down stairs-when we go up, we have to work to overcome the force of gravity, while when we go down, the pull of gravity makes it easier for us.
2.The force of gravity, like all other forces, can cause changes in the speed of objects. As an object falls, its speed will continually increase as Earth's gravity continually pulls it downward. When air resistance is ignored, all objects will speed up at the same rate as they fall.
Answer:
1.when we go up, we have to work to overcome the force of gravity, while when we go down, the pull of gravity makes it easier for us.
2.As an object falls, its speed will continually increase as Earth's gravity continually pulls it downward.
Explanation:
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