I need help in resolving ths problem: A mass of 30kg sliding down at 30 deg inclie with Vo=.30m/s and A=5m/s2 and the incline 7m. There is kinetic friction between the crate
a what's the kinetic energy
b how much work was done upon the mass by frictional force
c waht's the magnitude of frictional force
what's the coef of kinetic friction between mass and incline
how much work was done on ass by gravitational force
Calculate change in the gravitational potential energy of the earth-mass system.

Your help is gratly appreciated