I figured out the answer -- its the cosine of 18.4 degrees, but I'm still not entirely sure about how to get the answer, my approach was trial and error.
Car B is driving straight toward the point O at a constant speed v. An observer, located at A, tracts the car with a radar gun. What is the speed |r(dot)[SIZE="1"]B/A| that the observer at A records? --I've attached a crude version of the example picture. By the way, the angle of the line from...
Thats what I tried with the equation, I guess my real problem lies with how I set it up... I went about it like this
(final kinetic energy)+(final elastic energy)+(final gravitational potential energy) = (initial kinetic energy)+(initial elastic energy)+(initial gravitational potential...
A 10kg box slides 4.0m down a frictionless ramp, then collides with a spring whose spring constant is 250 N/m. (Also, the ramp is angled at 30 degrees).
a). What is the maximum compression of the spring?
b). At what compression of the spring does the box have its maximum velocity?
I started...