acceleration is defined as the rate of change for which characteristic? a. displacement b. position c. velocity d. timewhat acceleration does the force of earth's gravity produce? a. 9.8m/s/sb. it varies depending on how long it has been fallingc. it changes direction every 9.8 metersd. gravity does not produce an acceleration hurry need this

1) C. velocity

Acceleration is defined as the rate of change of velocity per unit time. In formulas:

where

is the change in velocity

is the time interval

Therefore, the correct answer is C. velocity.

2) A. 9.8m/s/s

Earth's gravity is a force, so it produces an acceleration on every object with mass located on the Earth's surface. This acceleration can be calculated, as it is given by the formula

where

is the gravitational constant

is the Earth's mass

is the Earth's radius

By substituting these numbers into the formula, one can find that the acceleration due to Earth's gravity is .

probably not if net force is zero

if they have a finite resultant