Hi! I believe the correct answer is A. Do you have any other questions I can help you with? I would be glad too.
- Amber
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The ball has to push things out of its way in order to keep going.
For example:
-- billions of air molecules
-- hundreds of blades of grass .
-- To push something out of its way, the ball exerts a force against the
obstacle, and pushes it some distance.
-- A force acting through a distance is 'work', and that means 'energy'.
-- The ball has a certain amount of energy ... the amount you gave it
when you kicked it. It gives every air molecule and blade of grass a
little bit of energy, so the ball has less and less as it goes along.
-- Eventually, it has no more energy to use to push things out of the way.
No energy means no motion, so it stops.
-- If it were in space where there are no air molecules and no grass,
it would go on forever.
Answer:
Explanation: w= mgh
W= pressure * volume
Pressure= density *gravity *height
Pressure = 1000*9.8*6
Pressure= 58860N/m^2
Work = 58860*6
Work= 353160j
Work = 353.16kj
It is said to be concave
and convex is the one reflecting outward
