Is the distance traveled during a specific unit of time.

Speed

Explanation:

Speed is a scalar quantity, defined as the ratio between the distance covered and the time taken:

where

d is the distance covered

t is the time taken

Speed is measured in meters/second (m/s).

It should be noted that speed is different from velocity: in fact, velocity is a vector quantity, whose magnitude is defined as

where d is the displacement (not the distance), and it also has a direction, while speed does not have it.

answer: a ball

explanation: because it will bounce

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.