a projectile is fired horizontally off a table at a height of 95 cm. it lands 2.10 meters away. what is the initial velocity of the projectile?

490 n  f=125n a=2.5m/s2

The sun's gravitational pull is weaker on the planets that are closer to it, i think.

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.