Answer:252 miles
Explanation:
Given
During his way to mountain it took 7 hr to drive
and during his return trip it took 4 hr to return
Let x be the distance between home and mountain
average speed for return is 27 miles per hour faster than his former trip
let v be the speed on his way to mountain thus v+27 is his return speed
thus
----1
for return trip
-----2
divide 1 & 2




thus 
100 J
Explanation:
multiply the force by the distance
20 N x 5 meters = 100 J
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Answer:
what did u say and what language are you speaking in
It would be option C. It rotates, or spins, on its axis, but it revolves around the sun.
There are 120 seconds in two minutes, so to find the answer, you multiply 20 x 120 to get 2400 meters.