A person in a floor above you drops his mobile phone out the window. It takes 0.2 s for the phone to fall 2 m past
your window. Estimate how far above you the person must
have dropped the phone.

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?

The particles that are found in the nucleus of an atom are

Which describes an object in projectile motion? check all that apply. a.gravity acts to pull the object downb. the object moves in a straight path. c.the forward velocity of the object is 0 m/s. d.the object’s inertia carries it forward. e.the path of the object is curved.