2. the amount of charge and the distance from the charge determine

a: strength of the negative charge

b: strength of the positive charge

c strength of the electric field

d: static electricity

also tell me why the answer is the answer, i'm having a bit of trouble in science.

An object is dropped from a tower, 400 ft above the ground. the object's height above ground t seconds after the fall is s(t)equals400 minus 16 t squared. determine the velocity and acceleration of the object the moment it reaches the ground. the velocity of the object the moment it reaches the ground is nothing ft/s.

When an object is heated it contracts. a. true b. false

The reason a penny thrown straight up inside a bus will come back to your hand is that you, the bus, the air inside the bus, and the penny are all moving at the same velocity. true or false