Gravity adds 9.8 m/s to the downward speed of a falling object every second. (On Earth.)
In 7 seconds, gravity adds (7 x 9.8 m/s) = <em>68.6 m/s</em> to the downward speed of a falling object.
(IF air resistance has no effect on the object.)
 
        
             
        
        
        
Answer:

Explanation:
From the question we are told that
Force of power 
Velocity of power 
Generally the equation for power is mathematically represented as


Generally the dot product of F and V is mathematically given as
 
 
 
   
 

 
        
             
        
        
        
The hint is wrong.
Volume of a cylinder is   π r² h .
For the cylinder in the question,
                 Volume = ( π ) · (1.5 cm)² · (5.3 cm)
                             = ( π ) · (2.25 cm²) · (5.3 cm)
                             = ( π ) · (11.925 cm³)
                             =        37.4 cm³