All Questions
13
questions
1
vote
1
answer
109
views
Projectile of an object thrown from rotating planet
Last night I couldn't sleep for some time because of thinking this problem. The starting point of this problem was actually "If we were to jump perfectly vertically on earth, would we land on the ...
0
votes
3
answers
384
views
Does a slow moving object fall faster than a fast falling object?
If I have understood it correctly, air resistance is proportioal to the squared speed of an object, meaning that the faster the object is going the more affected by air resistance it is ( which must ...
- 41
6
votes
7
answers
2k
views
Why do elastic balls bounce?
Can someone please explain the process of a ball bouncing in terms of Forces?
First, it doesn't make sense to say that the normal force is greater than that of the upwards force. When the ball hits ...
- 183
0
votes
3
answers
90
views
Conceptual doubts about Force and Gravity [closed]
First Question: Force applied for a span of time.
Let's say a force $F$ is applied on an object of mass $M$.
So, the acceleration of that object in the direction of $F$, would be, $a = F/M$.
Now, if ...
- 33
-5
votes
3
answers
334
views
Does the object have acceleration in the tangential direction of the path? [closed]
Objects thrown horizontally fall freely along the path of the parabola. Does the object have acceleration in the tangential direction of the path? I think it is, but someone told me it was not. He ...
- 2,040
0
votes
1
answer
98
views
Is gravitational force different from centripetal force in projectile motion?
This has always confused me, in a projectile motion, like a cannon shooting an object, the only force acting on the body is gravitational force, which is facing downwards or more precisely, ...
- 63
0
votes
4
answers
61
views
Will component of force help the rock to move in the same velocity?
Suppose I am on the moon. So I am throwing a rock upwards in a velocity of $v$ with an angle of $a$ with the ground. Now we can divide the velocity in two components. One is perpendicular to the ...
- 1,400
-1
votes
4
answers
147
views
Why is this not considered pressure?
When you throw a ball in the air it is being pulled down by gravitational force, so we can take gravity as the force and the ball as the surface. However, it seems that this isn't pressure, but why ...
- 513
0
votes
1
answer
10k
views
Projectile on an inclined plane [closed]
Say you have the classic problem of a projectile going at 10m/s at 15 degrees off a plane already inclined at 30 degrees (so the projectile's angle with respect to the earth is 45 degrees), and you ...
- 307
0
votes
1
answer
6k
views
Maximum range of projectile launched from an inclined plane [closed]
As we already know the max range if we launch it from any flat surface or from any height but I was wondering what will be maximum range if we launch it from inclined plane.
I have made on figure of ...
- 1,840
0
votes
1
answer
2k
views
What force acts on a coin that has been tossed when it is half way to the top? and what force acts on it when it is at the top?
This is a homework question and it appears to be a misleading question. I think that the answer is gravity for both of them. The only alternative answer I have is kinetic energy half way up and ...
- 1,660
23
votes
5
answers
15k
views
Is this scene from the A Team explainable by Physics?
This scene (youtube link) from the movie The A-team, the four members are in the tank and its falling from the air, they fire the canon and it slows the tank from falling for a moment before falling ...
- 349
3
votes
1
answer
1k
views
Ski Jumper's vertical velocity after $246.5m$ record?
What would be the vertical velocity of this ski jumper (ski flyer), after he first touches down, after he breaks the record with a $246.5m$ jump? What g force would he experience as he slows down?
...
- 39