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BOTTLECAP UP A RAMP PHYSICS QUESTION. Impossible!!?
our teacher assigned this question to our class but i cannot seem to get it nor understand it!
fellow genius, heeeeeeeeeeelp!
A youngster shoots a bottle cap up a 16.5o inclined board at 1.99 m/s. The cap slides in a straight line, slowing to 1.05 m/s after traveling some distance. If the coefficient of kinetic friction is 0.41, find that distance.
WHAT DO I DO??
- DHLv 71 decade agoFavorite Answer
You can use energy eqns to solve this
(K + U)1 + Work = (K + U) 2 where K is kinetic energy and U is potential energy
Now U 1 = 0 and K2 = 0
So 1/2*m*v1^2 - µ*m*g*cos(16.5)*L = m*g*L*sin(16.5)
so 1/2*v1^2/g = L*(sin(16.5) + µ*cos(16.5))
So L = v1^2/(2*g*(sin(16.5) + µ*cos(16.5))
L = 1.99^2/(2*9.8*(sin(16.5) + 0.41*(cos(16.5)) = 0.298m