Linked Questions

4 votes
2 answers
18k views

Why and when do we differentiate or integrate equations in physics? [closed]

I'm an engineering student and none of my professors ever explained why do we use derivations and/or integrations in physics. So I have this task, it goes like: The object is moving in a positive ...
user3104311's user avatar
3 votes
0 answers
1k views

Particle moving under force $F=-cx^3$ [closed]

A particle with mass $m$ moves under influence of a force $F=-cx^3$, with $c$ a constant. What is the potential energy function $V(x)$? And if it starts to move from rest from position $x=-a$, what ...
JimmyP's user avatar
  • 53
2 votes
3 answers
2k views

Terminal velocity and distance traveled with constant but limited power

I'm trying to model how far to move an object over time according to a power applied resisted by friction. So maybe... an object accelerates at a certain rate until the power provided can no longer ...
JayDoe's user avatar
  • 21
2 votes
1 answer
474 views

the final velocity non-constant acceleration

I'm not sure if my problem was asked before, but if so, a simple link to the answer would be appreciated. Basically I've recently seen videos about spud cannons that use compressed air and it got me ...
Mohamed Al-Ganzoury's user avatar
1 vote
2 answers
505 views

Convert an equation for acceleration into one for velocity

A sledge is pushed in a straight line. Assume surface is smooth. When the sledge is x distance away from the start the magnitude of its acceleration is given by $0.08e^{-4x}$ and is going in the same ...
MathsNoob2015's user avatar
1 vote
2 answers
1k views

Equation for position of mass suspended by a spring on an incline

I'm interested an application of hooke's spring equations to solve for the position of an object with respect to time in the following scenario: Where $T_2$ is a spring with coefficient $k$. I ...
theideasmith's user avatar
1 vote
1 answer
85 views

Solve $a(t) = g - \beta v(t)$ for $t$

If $g$ is the acceleration due to gravity and $\beta$ is a known value, solve for the time $t$ it takes an object to reach a given velocity if the acceleration of the object is given by $$a(t)...
WHY's user avatar
  • 113
1 vote
4 answers
1k views

How long does it take for an electric car to go from 0 to 60 mph?

I found the freefall motion equation which describes terminal velocity of a falling body, but I can't find a similar equation for a vehicle subject to constant traction force, so I tried determining ...
jumpjack's user avatar
  • 178
1 vote
1 answer
245 views

Truck driven from a small motor that can carry a heavy load, yet can travel fast. [closed]

I am building a truck from trash as materials. I have one small motor and a a few small gears, but no other engineered materials are allowed. The truck must carry a load for a distance of 3m. The ...
user20931's user avatar
1 vote
0 answers
59 views

One dimensional motion with changing acceleration. Falling to a large body from a great distance [duplicate]

Possible Duplicate: Radial fall in a Newtonian gravitational field My math and physics are rusty. I am trying to calculate the time an object takes to fall to a large body. Before you answer $1/...
KeithSmith's user avatar
0 votes
2 answers
73 views

How can I find $v(t)$ if I'm given $x(v)$? [closed]

The given is the distance but the variable is the velocity $x(v)=k \,v^2$. I want to find the velocity $v(t)$.
Kuro no Exorcist's user avatar
0 votes
1 answer
2k views

Area under the displacement-time graph giving time?

This is probably very stupid, but today at a lecture, our professor solved a problem where we had to find the time taken to travel from 0-5m, where $v = 3/x$ (velocity is a function of position.) ...
xasthor's user avatar
  • 1,096
0 votes
3 answers
1k views

Calculate average speed of projectile with air resistance

There's a project that I'm working on that been bugging me for awhile. The project involves this senario: A projectile is released at 1000 feet per second and moves in a straight line infinitely with ...
R2800's user avatar
  • 1
0 votes
1 answer
115 views

Calculating force of a car [closed]

I'm simulating car cruise system and my results are not making any sense. I have been told that my force formula is wrong but I don’t understand why it is wrong and how I can fix this. Does anybody ...
user3797683's user avatar
0 votes
3 answers
2k views

Maximum acceleration for a vehicle [closed]

I'm in engineering school and we have a project: we have to build a amphibioues vehicle; I'm looking for a formula. Our vehicle has to go as far as possible with its unique source of energy, a ...
user1892467's user avatar

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