C) In the absence of an unbalanced force, an object at rest will stay at rest and an object in motion will stay in motion.
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<span>Unless the pig moves static friction acts on it once the pig starts moving kinetic friction comes in to play so when the pig is not moving=frictional force acting on it =normal force*co-efficient of static friction.</span>
Answer:
Magnitude of the resultant force will be 20N in the direction of 
.
Explanation:
It's given in the question that two forces have been applied on the object given.
Since force is a vector quantity, therefore, it has magnitude and direction both.
Both the forces are in the opposite directions.
Therefore, magnitude of the resultant force of these forces will be,
= 20 N
And the direction of the resultant force will be towards .
Therefore, magnitude of the resultant force will be 20N in the direction of .
Ok so B would be the best surface to reflect heat energy as it's polished and does not disturb the wave of energy like the others would. Also in therms of colour it's better because it's a lighter colour than navy ( the darker colour of the spectrum ). This matters as darker colours absorb light where light colour reflect it.
Hope this helps :).
