If the object is moving in a straight line with constant speed, 
that's a description of " acceleration = zero ".
Zero acceleration means zero net force on the object.
NO net force is 'required' to keep an object moving in a straight line 
at constant speed.  In fact, if there IS any net force on the object, 
then either its speed or its direction MUST change ... there's no way 
to avoid it. 
None of this depends on the object's mass, or on the speed or direction 
of its motion.
        
             
        
        
        
Explanation:
Total Resistance: 3+2 = 5 ohms
V=9V
Power = V²/R
=9²/5
=81/5
=16.2 W
 
        
             
        
        
        
What Newton discovered is that  gravity extends throughout the universe.
<h3>What is gravity?</h3>
The term gravity refers to the force that acts on a body in the universe. It is gravity that makes an object to fall when it is thrown up. The force of gravity acts on every object in the universe and it extends through the universe.
Humans have always known about gravity when they fall from a height and when they threw things up. However, human did not know that gravity extends throughout the universe.
Thus, what Newton discovered is that  gravity extends throughout the universe.
Learn more about gravity:brainly.com/question/4014727
#SPJ1
 
        
             
        
        
        
Answer:
Centre of mass of any body is a point where all mass of a body is supposed to be concentrated 
it lies in geometrical centre....