Your input is great, rsrajeesh, but jstew posted his question nearly 4 months ago, to put things into perspective. Try helping out people who have more current questions - people who don't get their questions answered within 2 weeks generally won't ever look back on them.
...if he reduces speed to 12 m/s right as the light turns red, he can maintain that speed until he reaches the light, and after 15 seconds, the light wouldve turned green again once he passes through.
Now that I think about it, this is a bad question, because the driver could slow down or speed up until he reaches the light and just gun it right through there, so really, any speed would work.
I'm sure you're glad you heard that lol.
His speed will be the same. When the light turns red, it will take him 15 sec to reach the light. Because the light is timed for 15 seconds, he will not have to change speed at all.
Homework Statement
A uniform circular plate of radius 2R has a circular hole of radius R cut out of it. The center C' of the smaller circle is a distance 0.80R from the center C of the larger circle. What is the position of the center of mass of the plate?
Homework Equations
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Homework Statement
Consider a system of two blocks that have masses m_1 and m_2. Assume that the blocks are point-like particles and are located along the x-axis at the coordinates x_1 and x_2. In this problem, the blocks can only move along the x axis. Find the x coordinate of the center of...
I found it out!
The time can be found by using the y-component equation, setting the velocity & initial y-position both to 0. We know the x-distance traveled is 5 m, so the velocity is 5 m divided by the value for time that was found.
Homework Statement
The cliff divers of Acapulco push off horizontally from rock platforms about 35 m above the water, but they must clear rocky outcrops at water level that extend out into the water 5.0 m from the base of the cliff directly under their launch point.
What minimum pushoff...