1Is it possible to land safely on the Moon using a parachute, as on the Earth?
2When the model parachute is dropped from a height, does it fall at a high speed at the beginning and with a uniform speed at the end? Why?
3When the U-shaped frame and the spring balance fall together, what weight does the balance show, and why?
4What is free fall? What is the acceleration of an object in free fall near the Earth?
5Why is true free fall possible only in a vacuum?
6A stone and a flat sheet of paper are dropped together. Which lands first? What happens if the paper is crumpled into a ball first?
7Explain why the fall of a parachute on Earth is not a free fall.
8Why does hail fall at a constant speed? How does this help us?
9How are the seeds of plants such as simal and sal dispersed far away?
10What is weightlessness? Why do astronauts inside a space station experience it?
11Is free fall possible on the Moon? Why?
12What happens to the air resistance on a falling object as its speed increases, and what is the result?