Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [physics]

Questions on the mathematics required to solve problems in physics. For questions from the field of mathematical physics use (mathematical-physics) tag instead.

This tag is for questions on the mathematics required to solve problems in physics and should not be confused with those on physics concepts. Pure physics questions should go in the Physics Stack Exchange. For questions in the field of mathematical physics, please use the tag instead.

5951 questions
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Given a straight line with some distance, a fixed rate of acceleration/deceleration, and a time, find the velocity needed

I have a path which is a straight line with some distance d. I have a particle which is at position 0 in the line, with a resting velocity of 0 m/s. The particle has a fixed rate of acceleration at 2 m/s^2 (this rate is set to 0 once a desired…
AdnanEK
  • 57
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$D = rt$ problem where two people are going up stairs at different rates. What is the speed of the faster person?

Kevin and his little brother both start at the same level. The rate that the two brothers gain levels is constant. If Kevin gains levels $1.5$ times as fast as his brother, and at the end of two hours, Kevin is six levels higher than his brother,…
Atrey Desai
  • 119
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3 answers

Find Friction Coefficient given initial and final velocity?

I am not sure how to approach a problem involving the friction coefficient when only given initial velocity, final velocity, and distance traveled. I could combine the friction and kinematic equations, but I am only familiar with doing that for one…
tyger2020
  • 87
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Dynamics - Bungee Jumping - Grade 12 Maths C

The full question is as follows: New Zealand is the home of bungee jumping. One of the major jumps is located on a bridge over the Shotover River near Queenstown. In this case, the bridge is 71 m above the river. Participants jump from the bridge,…
greenie
  • 49
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Basic Physics question

Velocity vector $A$ has components $A_x=3 \text{ m/s}$ and $A_y=4 \text{ m/s}$. A second velocity vector $B$ has a magnitude that is twice that of $A$ and is pointed down the negative $x$-axis. Find the $x$ component of $B$ This is what I…
Zoey
  • 53
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1 answer

Seesaw logic problem

The seesaw is divided equally into $6$ parts and is already tilted to the left side with the first $2$ blocks. Assuming all the green blocks weigh the same, which side would the seesaw tilt if the $3^{\text{rd}}$ block is placed on the right edge…
Truth
  • 123
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2 answers

Physics Calculus Problem

Given that velocity is given by $v(t) =\sin(t^2)$, at what time does the total distance equal $1$? I have no clue how to solve this, since I cannot integrate the function
acorn
  • 31
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Vector expressions

A basket of flowers weighing $2$kg is placed on a flat grassy slope. The coefficient of static friction between the basket and the slope is $0.4$, and the basket is on the point of slipping down the slope. Write down vector expressions for the…
S17
  • 129
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Finding the maximum height a ball can be dropped from and still collide with a ball thrown below it

I don't necessarily need a specific answer, but I could use a hint, direction, or maybe some reading material. The question states: A rubber ball is shot straight up from the ground with speed $V(0)$. Simultaneously, a second rubber ball at height…
FullR
  • 21
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2 answers

Specifying plane waves

I'm having trouble understanding how to specify a transverse wave (including it's longitudinal axis and transverse direction) in 3d space. I know this is called a "plane wave", and I know the formula for a plane wave along a unit vector $\hat{k}$…
bobobobo
  • 9,502
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Hydrostatic force on a dam

A dam is inclined at an angle of 30° from the vertical and has the shape of an isosceles trapezoid 200 ft wide at the top and 100 ft wide at the bottom and with a slant height of 160 ft. Find the hydro static force on the dam when it is full of…
mike
  • 667
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motion in a straight line

Solution 1 Solution 2 Need to find $a_2$/$a_1$. But I am getting different answers. I found out there can be more solutions other than these two. I am confused why this is happening? Plz Help. edit A particle is moving on a straight line with u…
Sara
  • 405
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2 answers

How to get angular velocity from difference orientation quaternion and time?

I am using Bullet Physic library to program some function, where I have difference between orientation from gyroscope given in quaternion and orientation of my object, and time between each frame in milisecond. All I want is set the orientation from…
Andrew
  • 23
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2 answers

Physics Problem - Finding the horizontal distance traveled by a soccer ball

"You can kick a soccer ball a distance of $28$ $m$ when standing on level ground if the ball is launched at a ${40}^{\circ}$ angle. If you kick the ball in exactly the same way, but are at the foot of a ${15}^{\circ}$ upward slope, what is the…
Claire
  • 73
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4 answers

Physics-projectile motion-finding the angle

An object is fired from a cliff 50m high, at an initial velocity of 100 m/s at an unknown angle. You have to find the angle required to fire the object to a bucket 10m away that is 2m tall. I have tried to solve it but I just seem to be going in…
Ella
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