I know there isn't a "set in stone" step by step procedure to solve work problems, but if someone could give me a basic procedure it would be greatly appreaciated. When ever I read a work problem, unless it is a simple "plug in the value" works equation problem, I do not understand how to start...
I have been studying the Work and Energy chapter of physics and am currently confused on when to make work equal potential energy and when to make it equal to change in kinetic energy. Some of the problems have the work equal to change in KE and some have it equal to PE.
For example, why is...
We actually did a lab a few days before where we did a zero degree launch. We set the marble launcher on top of the lab tables and launched the marble at 0 degree (horizontal launch). When I launched the marble, the x distance it traveled was 1.17m and the y height the marble was launched at...
This is the problem:
I have a marble launcher that is 1.17 m tall and it needs to hit a target that is 3.645 m away. What should the angle of the launcher be set to in order to hit the target?
*Marble is launched at a height of 1.17 m.
What I don't understand:
How can I solve this without...
So to find the distance the airbag traveled, I would have to take 50 cm subtracted by the distance the man traveled. These would by my known quantities:
V(initial): 25 m/s
V(final): 0 m/s (because he hits the airbag)
T: 0.009 s (convert 9 ms to sec)
D: ?
So I would have to plug his into...
So you're saying my other quantities are correct, except the quantity for distance because the driver will still be moving forward while the airbag is coming out so he distance would be less than 50 cm. So if I found the right distance, and plugged it into the equation, I would gt the right answer?
A car is traveling at 25 m/s when it runs off the road and hits a utility pole. The car stops instantly, but the driver continues to move forward at 25 m/s. The airbag starts from rest with a constant acceleration from a distance of 50 cm away from the driver and makes contact with him in 9...