Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [kinematics]

For questions on the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the mass of each or the forces that caused the motion.

Kinematics is a branch of classical mechanics that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the mass of each or the forces that caused the motion.

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$\frac{\mathrm d}{\mathrm dt}\sin^{-1}((L_1/L_2)\sin(\theta))$

I'm trying to solve a kinematic problem involving two angles. The second angle ($\theta_2$), can be expressed in the first angle ($theta_1$) by the equation shown in the title. However, after I have determined the equation for the position, I also…
Luc
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Projectile motion: a small ball being fired up at an angle

Please have a read of the problem description: How can I find the relationship between angle theta and phi??? Also, by considering energy (or otherwise), how can I calculate the vertical height reached when ball ceases bouncing, for…
justbehappy
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When do 3 particles on the vertices of an Equilateral triangle meet?

I am having a problem solving the following question. It says that "3 particles A,B and C are situated at the vertices of an equilateral triangle ABC of side d at t=0. Each particle moves with a constant speed v. A always has its velocity along…
geek101
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Kinematics Gravity, Height, Distance, Velocity

Might be an appallingly easy question to some I was wondering how does difference in gravity affect distance travelled by a projectile? Assuming no air resistance or other external forces and that height thrown/velocity/launch angle remains the…
LucasCK
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Kinematics question, how to find the time when only given average speed, please help.

A particle moves in a straight line, starting from rest at point $P$. It accelerates for $5$ seconds, until it reaches a speed of $16\frac m s$. It maintains this speed for $T$ seconds and then decelerates at $2 \frac{m}{s^2}$ until it comes to a…
Student
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kinematics question. this question is about using time in a kinematics question.

question : particles A and B are projected vertically upwards with velocities 20m/s and 25m/s. particle B is projected 0.4 seconds later than particle A. find the velocities of A and B at the instant when the particles are at the same height. here…
sweetie sakura
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kinematics question

A golf ball is putted towards te cup which is located 5.00m away, delectation is 0.250m/s^2, what is the velocity must the putt be made so that the ball just drops into the cup? so I'm having trouble understanding the question, so t=?, vi=?, a=…
Ben12
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Solving an A Level kinematics problem using suvat formulas

A car comes to a stop from a speed of $30m/s$ in a distance of $804m$. The driver brakes so as to produce a deceleration of $\frac12m/s^2$ to begin with and then brakes harder to produce a deceleration of $\frac32m/s^2$. Find the speed of the car at…
AbiH
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Calculating interception speed

If 2 parallel objects are traveling at 1200 m/s and 30m apart what is the minimum speed a 3rd object would have to move to intercept both objects (assuming it can only travel at 180 degrees in straight lines, horizontal to the 2 objects course). I'm…
user217699
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kinematics: what does the answer mean?

$v = -0.01t^3 + 0.22t^2 - 0.4t$. Find the 2 positive values of t for which the particle is instantaneously at rest. This part has been done: $t= 2$ and $t= 20$. Find the distance travelled by the particle while its velocity is positive. We find an…
ilove cupcakes
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