You will just need to work out the projectory of the ball as it leaves the ramp. Use suvat equations to work out the speed and acceleration ect of the ball and you can easily work it out.
You may also want to do some test rolls to work the values out - i.e. roll the ball down and measure the...
I think this is how you would do it:
Find the time it takes the block to hit the floor:
s =ut + 0.5at^2
1.5 = 0.5*9.8t^2
t = 0.55 seconds
Then use this to work out what acceleration would be needed to move the block 2.5m in that time.
2.5 = 0.5a*0.55^2
a = 16.33 m/s
Then work...
Thanks, i knew it had to have something to do with the photons exciting the electrons and in turn a photon being emmited - hense the fact i had my mind set on the photoelectric effect.
My mind is at rest now :)
This may seem like a stupid question, but i just can't get my head around it. Basically i was wondering why a mirror refless light. Of course the simple answer suggests that it just reflexs it back (the basic laws of optics). But then i was also thinking about the photoelectric effect and was...