The motion tag has no wiki summary.
7
votes
5answers
533 views
Should you run when under rain?
When it's raining, would you get less wet if you run or more wet?
I think you will get less wet, because rain is coming down in a constant volume and if you run you will have a shorter amount of time ...
0
votes
0answers
122 views
How to calculate acceleration of a falling ball [closed]
If a ball was thrown or fell at an angle, given a starting height, and how far away the ball landed (ignoring air resistance) how would you calculate how fast it was going? (I'm guessing is meters per ...
-2
votes
2answers
187 views
What is a natural movement of a ball on a upward curve (the two arrow lines pointing upward) given no external force?
If you drop a ball down a upward curving parabolic ramp, what is the expected movement of the ball? Assume the ball is set into motion with no external force.
Would it go all the way from point A to ...
6
votes
2answers
378 views
What is the highest energy position for a double pendulum? And for which energy positions is it chaotic?
Math/physics teachers love to break out the double pendulum as an example of chaotic motion that is very sensitive to initial conditions. I have some questions about specific properties:
For a ...
4
votes
3answers
151 views
Does more rain strike a vehicle while moving or while stopped (or neither)? [duplicate]
Assume there is a rainstorm, and the rain falling over the entire subject area is perfectly, uniformly distributed. Now assume there are two identical cars in this area. One is standing still, and ...
3
votes
1answer
233 views
Why do wheels appear to revolve opposite to the direction they are rotating?
When viewing cars that are driving along side of us, sometimes their wheels appear to be turning backwards even though they are traveling in the same direction as our car. Why do they look that way?
9
votes
3answers
544 views
Could a fish in a sealed ball, move the ball?
If you had a glass ball filled with water, completely sealed and containing a fish, could the fish move the ball?
3
votes
3answers
368 views
How would you move without gravity?
I'm wondering how would you move without gravity? You would still have air pressure at 1Atm.
Would you "swim" in the air or would you have do something else?
3
votes
2answers
366 views
Does entropy apply to Newton's First Law or does “acted upon” always require an external factor?
First law: Every body remains in a state of rest or uniform motion (constant velocity) unless it is acted upon by an external unbalanced force. This means that in the absence of a non-zero net ...
1
vote
1answer
211 views
Relative Speed vs speed of light [duplicate]
Possible Duplicate:
Travelling faster than the speed of light
Someting almost faster than light traveling on something else almost faster than light
I've got two questions which are ...
0
votes
2answers
659 views
Position in circular motion
Is it possible to determine the position of a particle undergoing circular motion, in x-y coordinates, at any given time and velocity?
I'm thinking it has something to do with $\pi$
0
votes
2answers
1k views
Projectile motion without air resistance
Does the mass of projectile affect its trajectory when it is projected in no air resistance environment and why?
