4. Physical scientists have helped develop
ceramics, plastics, and

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

2) why do satelites not fall while revolving around the earth?

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?