All Questions
217
questions
0
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2
answers
63
views
Why do objects slow down when they hit the ground? [closed]
Say you drop an object on the ground. For the purpose of this question, I am just focusing on the slowing down of the object, not if it rebounds. I was just wondering which of the two reasons explains ...
- 539
3
votes
2
answers
85
views
Why do basketballs with more air in them bounce more than ones with less air?
I thought it this because more air means more pressure, so there will be more pressure when the ball is deformed and it will gain more kinetic energy as it rebounds. However, some sources say that ...
- 539
2
votes
2
answers
542
views
According to Newton's Third Law why is there a difference in movements between collisions of different mass (please read description)?
When an object of some mass hits and rolls towards another stationary object of the same mass, the ball that was rolling stops. However, if we use the same ball from that scenario, and roll it at the ...
- 23
0
votes
0
answers
41
views
Why does a ball bounce off the wall? [duplicate]
When we throw a ball onto a wall, the ball comes in contact with the wall. And the velocity of the ball comes from V m/s to 0m/s. According Newton’s first law, a force was acted on the ball by the ...
- 21
1
vote
2
answers
61
views
A block experiencing a constant force collides with a stationary block
If a constant force is exerted on a block 'A' on a frictionless surface and if it collides with a stationary block of a lesser mass on the same surface (let's call it block 'B') then upon the ...
0
votes
4
answers
51
views
Force of impact on a body [closed]
This is a pretty silly question which got me pondering for a while.
We know that Force of impact on a body is given by $\frac{m(v_f-v_i)}{t}=\frac{mv_i(e+1)}{t}$ where e is the coefficient of ...
- 91
0
votes
2
answers
38
views
Can we figure out normal force acting on a body after it has collided?
Let's say there are two bodies, one stationary and the other with a constant velocity. After they have collided, some momentum of the moving body will be transferred to the stationary body. This will ...
- 83
0
votes
2
answers
91
views
What is an example of a contact force that is not a normal force?
I have a question about contact force and normal force.
whenever two bodies are in contact and one body tries to push another body there will be a normal force acting between them. like when we push ...
user379089
0
votes
1
answer
65
views
Calculate force required to pull a moving body to come to full stop and move opposite direction
I am trying an experiment with Electromagnets and looking for help to calculate force required. Please note I am not asking about electromagnets though since that would be electrical question.
So the ...
- 3
-2
votes
2
answers
119
views
What really determines punching force?
When it’s $F=ma$ why do some fighter like Francis Ngannou has the hardest punch although there are other fighters at same weight with more velocity. Does muscle strength has something to do with that?
...
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3
votes
0
answers
198
views
What weight does a scale show when you throw an object onto it?
Imagine you have a bucket (cross-sectional area $A$) on top of a scale. Into the bucket you begin to pour sand (density $\rho$) with a mass flow rate of $\dot{m}$. The total weight of the sand in the ...
- 31
1
vote
2
answers
92
views
How does Newton's First Law uphold in this case?
Let say that there is no air drag. A ball is thrown towards me and I hit it with a bat. Here of course I apply some force in hitting it. Then can someone help me out by explaining how does the ball ...
0
votes
1
answer
93
views
Does Newton's Third Law still apply at impact with a surface? [duplicate]
Suppose that I were to jump on the surface of the Earth. The moment I hit the surface, shouldn't the force Earth is applying on me be greater than the force I am applying to it so that I stop ...
-1
votes
1
answer
79
views
Why don't the net acceleration of the truck becomes zero after hitting the man? [closed]
Imagine, there is a truck of mass 'm' accelerating with an acceleration 'a', this means that the truck definately carries some force 'F'(let). Now, imagine the truck collides with a man standing ...
10
votes
6
answers
4k
views
Why does a metal ball not trace back its original path if it hits a wall?
If we have a metal ball, why does it follow the law of reflection after it hits a wall? My point is that if it applies a force on the wall at an angle say 30deg below the horizontal (the wall is the ...
- 151