A hill has a slope of 30 degrees relative to the horizontal direction. I push a ball of mass 2 kg directly up the slope, and as I do so, I take ten steps, with each step being 50 cm long. Presuming that the downward (i.e., vertical) force, in Newtons, exerted by gravity on the ball is 9.8 times the mass of the ball in kg, by how many Joules has the potential energy of the ball increased?

Question

anonymous · Answer

You can use E = m*g*h  

But, first of all you should calculate h. |dw:1380302720823:dw|

h=x*sin(30)