a horizontal force of magnitude 19.0 N is applied to a 2.86 kg book as the book slides a distance d = 0.73 m up a frictionless ramp at angle θ = 30°. The book begins with zero kinetic energy. What is its speed at the end of the displacement?

Question

a horizontal force   of magnitude 19.0 N is applied to a 2.86 kg book as the book slides a distance d = 0.73 m up a frictionless ramp at angle θ = 30°. The book begins with zero kinetic energy. What is its speed at the end of the displacement?

anonymous · Answer

|dw:1394182999896:dw|

anonymous · Answer

force parallel to ramp is Fcos30-mgcos60=ma
calculate a 
and put in formula v^2=2a d 
you know F,m, d you can get v

anonymous · Answer

this makes it easy! reading the question and coming to this is where i am terrible :(