A superhero flies 285 m from the top of a tall building at an angle of 20 ◦ below the horizontal. What is the horizontal component of the superhero’s displacement?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?