What minimum speed does a 170 g. puck need to make it to the top of a 6.0 m. long, 27 frictionless ramp?

2 answers

its 27 degree horizontal **
The vertical rise of the puck is
H = 6.0 sin27 = 2.724 m

Conservation of energy tells you that, when there is no friction, and the velocity is zero at the top,

gH = Vo^2/2

Solve for the required minimum initial speed Vo.

You don't need to know the mass.