A cannonball is shot from the top of a 47.8 m high hill at a speed of 53.7 m/s.
How fast is it going when it reaches
the plain below?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The material that keeps its new shape after it is stretched is called?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.