Answer:
g/cm³
Explanation:
From the question given above, 
The y-axis is representing mass (g)
The x-axis is representing volume (cm³)
Unit of slope =? 
Slope of a graph is simply defined as the change in y-axis divided by the change in x-axis. Mathematically it is expressed as:
Slope = change in y-axis (Δy)/change in x-axis (Δx)
Slope = Δy/Δx
Thus, with the above formula, we can obtain the unit used for measuring the slope as follow:
y-axis = mass (g)
x-axis = volume (cm³)
Slope =.? 
Slope = Δy/Δx
Slope = mass (g) /volume (cm³) 
Slope = g/cm³
Therefore, the derive unit used for measuring the slope is g/cm³
 
        
             
        
        
        
because as the distance increases the gravitational force decreases so the weight of a body decreases
 
        
                    
             
        
        
        
That's one of the three changes that are called "acceleration".
The other two are:
-- increase in the magnitude
-- change in direction.
Some might call a decrease in the magnitude "deceleration".
        
             
        
        
        
The time it takes for the Moon to rotate once around its axis is equal to the time it takes for the Moon to orbit once around Earth