Using the given values when the block reaches the end of the ramp determine the coefficient of kinetic friction of the block sliding down the ramp

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

It is really hard for me right know

What is the relationship between the direction of motion of the balloon and the wind currents