A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 19.9 with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.02 m. (a) How much work is done by the gravitational force on the crate? _x Does the gravitational force do positive or negative work on the crate? J (b) Determine the increase in internal energy of the crateincline system owing to friction. -x A careful free-body diagram of the crate may help you determine the magnitude of the friction force. J (c) How much work is done by the 102-N force on the crate? -x Note that the pulling force is parallel to the incline. J (cl) What is the change in kinetic energy of the crate? -x You appear to have calculated the change in kinetic energy correctly using your incorrect results from the previous parts, J (e) What is the speed of the crate after being pulled 5.02 m? |:l m/s Need Help