All Questions
6
questions
0
votes
1
answer
112
views
Determining Acceleration to Intercept Accelerating Object
I'm trying to determine direction in which a missile should accelerate to hit a target in a 3D space simulation. The position and velocity of the missile, as well as the position, velocity, and ...
- 111
1
vote
2
answers
287
views
How to find elapsed time for two trains to cross each other when they travel in the same direction?
The problem is as follows:
Two trains which have different lengths each are going to meet by
traveling on different tracks with speeds $v_{1}$ and $v_{2}$
respectively. They take $20\,s$ to cross ...
- 4,185
0
votes
1
answer
45
views
How can I find the speed of a falling object as seen from a car while in motion?
The problem is as follows:
A car driving in a city has a constant velocity of
$15\hat{i}-15\hat{j}\frac{m}{s}$ with respect to the ground in the
highway. However at $t=0\,s$ the driver in the ...
- 4,185
1
vote
2
answers
40
views
How do I find the velocity of a sphere falling when an observer riding a glass elevator?
The problem is as follows:
In a certain shopping mall which is many stories high there is a glass
elevator in the middle plaza. One shopper ridding the elevator notices
a kid drops a spheric ...
- 4,185
1
vote
1
answer
45
views
How can I find the speed and the angle of a water droplet in a rainy day as seen by a person running?
The problem is as follows:
A person is running following a constant speed of $4.5\,\frac{m}{s}$
over a flat (horizontal) track on a rainy day. The water droplets fall
vertically with a measured ...
- 4,185
0
votes
1
answer
338
views
How to I find the average angular velocity between two points given the average velocity and the position?
The problem is as follows:
In the figure from below it is shown an observer who has put himself
at the center of the coordinate system. He sees an object moving in a
circular trajectory. If the ...
- 4,185