Answer:
13
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Hence after  3.98 sec  i.e  4 sec Object will hit the ground  .
Step-by-step explanation:
Given:
Height= 6 feet
Angle =28 degrees.
V=133 ft/sec
To Find:
Time in seconds after which it will hit the ground?
Solution:
<em>This problem is related to projectile motion for objec</em>t 
First calculate the Range for object  and it is given by ,
 (2Ф)/
(2Ф)/
Here R= range  g= acceleration due to gravity =9.8 m/sec^2
1m =3.2 feet 
So 9.8 m, equals to 9.8 *3.2=31.36 ft
So g=31.36 ft/sec^2. and 2Ф=2(28)=56


 fts
  fts
Now using Formula for time and range as 

Vx is horizontal velocity 
 Ф
Ф
 (28)
(28)
 ft/sec
  ft/sec
So above equation becomes as ,


 
 
T is approximately equals to 4 sec.
 
        
             
        
        
        
One hundred thirty five 13%
        
                    
             
        
        
        
Answer:
Option B. No, because the graph of the line connecting the ordered pairs does no pass through the origin.
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  or
 or  
In a proportional relationship the constant of proportionality k is equal to the slope m of the line<u><em> and the line passes through the origin</em></u>
step 1
Connect the ordered pairs of the graph 
The y-intercept is the point (0,20)
see the attached figure
That means, that the line not passes through the origin
therefore
The relationship between the two quantities is not proportional