A 100-Kg Block Is Pushed Up a 30 ^o

Multiple Choice

A 100-kg block is pushed up a 30 ^o incline that is 10 m long. If the coefficient of friction between the block and the incline is 0.1, the constant force parallel to the incline that is required to move the block from rest at the bottom of the incline to the top in 3 s is approximately

A) 0.49 kN.
B) 0.085 kN.
C) 0.22 kN.
D) 0.80 kN.
E) 0.58 kN.