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AP Physics 1 Videos 69 videos
AP Physics 1: 2.4 Changes and Conservation Laws. Which of the following circuits should the students use?
AP Physics 1: 2.5 Changes and Conservation Law. At what point(s) in this situation is energy lost in any form?
AP Physics 1: 3.5 Object Interaction and Forces. Which of the following quantities would need to be known in order to calculate the impulse of the...
AP Physics 1: 1.2 Fields in Space 212 Views
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Description:
Don't let this question about gravitational forces get you down! Yeah, yeah...that was an easy joke. You get what you pay for.
Transcript
- 00:00
Thank you We sneak and here's your shmoop du jour
- 00:05
brought to you by gravity Sure it hurts when we
- 00:07
drop our physics book on her foot But at least
- 00:09
we're not floating off into the cold depths of space
- 00:13
That would happen All right given a very large sphere
Full Transcript
- 00:16
in which direction is the gravitational force directed and hear
- 00:20
the potential answer outward and we're perpendicular All right Well
- 00:25
there's One very large sphere that we should all be
- 00:28
pretty familiar with the earth That big ball All right
- 00:32
Now since we're on planet earth right now let's go
- 00:34
ahead and drop something Nothing expensive by the way Just
- 00:37
pencil Or maybe something soft Now did that pencil go
- 00:40
floating up toward the ceiling Did it start moving sideways
- 00:43
Well so we're probably not actually on planet earth And
- 00:45
in fact we may have been abducted by aliens Well
- 00:48
this has taken a turn and watch for the probing
- 00:51
All right But if we are on earth the things
- 00:53
we drop go downwards towards the core of the planet
- 00:56
So the correct answer is b all the other options
- 00:59
violate the laws of gravity and that's Not gonna happen
- 01:02
The gravity police keep things on lock down The next
- 01:04
time we're playing frisbee with a friend Let's remember to
- 01:06
thank gravity because the game would get really expensive if
- 01:09
the frisbees and never came down You know like a
- 01:12
flying saucer you know e
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