Video Reflection (Sky Diver) [October 15]

In the skydiving video gravity, air resistance, and terminal velocity. They explained how the force of gravity is essentially what pulls the skydiver down. However, air resistance prevents the skydiver from accelerating the full amount due to gravity. When the diver jumps gravity allows the acceleration. When the air resistance and acceleration due to gravity equal each other then the diver reaches it's terminal velocity. This is when the diver no longer increases his/her acceleration. Then this goes on until the diver releases his/her parachute. Therefore modifying the landing.

Video Reflection (Acceleration due to Gravity) [8/27]

The first video showed an astronaut dropping a hammer and a feather on the moon. this video shows how in the absence of air resistance, due to gravity being the same for both of the objects, regardless of the mass they should drop at the same time. They basically reached the surface of the moon at the same time proving this idea.


The second video was showing the same thing, but this time it was comparing the theories of Galileo and Aristotle. Aristotle did not have the same view as Galileo and it seemed at first as if Aristotle was right. However, at the end of the video it was show that Galileo is right. In the absence of air resistance, objects dropped will reach the ground at the same time due to the same force of gravity acting on them. Mass has nothing to do with it.

Hooke's Law Activity

1) What is the mathematical relationship between the applied force and the stretch of the spring?
Well, as the force increases so does the stretch. We can conclude that they are directly proportional to each other.
2) What conclusion can you draw between the applied force and the stretch of the spring?
The force follows the stretch. The greater the force, the greater the stretch.
3)What is the spring constant for your experiment?

4)Do you think the relationship between the applied force and the stretch of the spring will hold for all masses? Explain your answer.
I think so because it seems to be an established fact that with any mass, the force required to move that mass will result in a stretch. The force and stretch will keep effecting each other as the mass is moved.