A child standing on the edge of a freely spinning merry-go-round moves quickly to the center. Which one of the following stateme
1 answer:
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Answer:
The plane would need to travel at least (
.)
The runway should be sufficient.
Explanation:
Convert unit of the the take-off velocity of this plane to :
.
Initial velocity of the plane: .
Take-off velocity of the plane .
Let denote the distance that the plane travelled along the runway. Since acceleration is constant but unknown, make use of the SUVAT equation
.
Notice that this equation does not require the value of acceleration. Rather, this equation make use of the fact that the distance travelled (under constant acceleration) is equal to duration times average velocity
.
The distance that the plane need to cover would be:
.
The power in horsepower is 40.1 hp
Explanation:
We start by calculating the work done by the airplane during the climb, which is equal to its change in gravitational potential energy:
where
mg = 11,000 N is the weight of the airplane
is the change in height
Substituting,
Now we can calculate the power delivered, which is given by
where
is the work done
is the time taken
Substituting,
Finally, we can convert the power into horsepower (hp), keeping in mind that
Therefore,
Learn more about power:
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