Explain why the angle is important when lauching projectiles

What is a good example of instantaneous speed

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?

If the new moon happens on january 15th, what shape will it be on february 6th?