posted by Dar .
A block is pulled 2.9 meters up a 30° rough incline by an applied force Fa = 170 N, directed up the ramp. The frictional force has a magnitude of 90 N. The block starts from rest and has a final kinetic energy of 16 J.
Find the following:
a) The total work done on the block, Wtot =___ J
b) The work done on the block by gravity, Wg =___ J
c) The mass of the block, m =___ kg
d) The final speed of the block =___ m/s