4. a 3.0-kg block slides on a frictionless 20° inclined plane. a force of 16 n acting parallel to the incline and up
the incline is applied to the block. what is the acceleration of the block?
a. 2.0 m/s2 down the incline
b. 5.3 m/s2 up the incline
c. 2.0 m/s- up the incline
d. 3.9 m/s² down the incline
e. 3.9 m/s2 up the incline