## The problem of a rock thrown vertically up

A rock is thrown vertically upward from the ground with an initial speed 15m/s.
a. how high does it go b. how much time is required for the rock to reach its maximum height? c. what is the rock’s height at t=2.00s?
(Posted by Merhawi)
(a)
u=15m/s
a=-10m/s2
v=0 m/s […]

## The problem of a rock thrown vertically up

A rock is thrown vertically upward from the ground with an initial speed 15m/s. a. how high does it go b. how much time is required for the rock to reach its maximum height? c. what is the rock’s height at t=2.00s? (Posted by Merhawi) Answer: (a) u=1…

## The problem of a rock thrown vertically up

A rock is thrown vertically upward from the ground with an initial speed 15m/s. a. how high does it go b. how much time is required for the rock to reach its maximum height? c. what is the rock’s height at t=2.00s? (Posted by Merhawi) Answer: (a) u=1…

## Accelerated Motion and Gravity Equivalence

It seems a principal of Einstein’s General Theory of Relativity that there is an equivalence between accelerated motion and being in a gravitational field.  It seems that an observer would have no way to tell the difference between these two states.  However, the gravitational force being mediated by elementary force carrying particles (gluons I think), […]

## Idea on origin of Gravity – A discussion

Derek shares his idea on origin of Gravity – “if you were to suddenly put a large object in space then the space would  be pushed out to the sides (displacement) . because the object  is now in the place were space once  occupied ?? so space is just pushing  back to its original area ???? is this what gravity is??? or […]

## Weightless Wonder : Reduced Gravity Flight

Follow the link below to watch and download NASA’s article on Reduced gravity flights DOWNLOADS > Weightless Wonder Educator Edition (PDF 295 KB) > Weightless Wonder Student Edition (PDF 301 KB) Related Resources > VIDEO: Microgravity University Flight Video

## Weightless Wonder : Reduced Gravity Flight

Follow the link below to watch and download NASA’s article on Reduced gravity flights DOWNLOADS > Weightless Wonder Educator Edition (PDF 295 KB) > Weightless Wonder Student Edition (PDF 301 KB) Related Resources > VIDEO: Microgravity University Flight Video