Question 1183220: . Hayden is playing with a toy airplane. The height of the airplane, in metres, is given by the relation
� = −��� + ��� + �, where � is the number of seconds since the plane was launched. At time �, the
horizontal distance travelled by the airplane is given by � = �. ��.
a) For how long will the airplane be in the air, rounded to the nearest tenth of a second?
b) How far will the airplane travel horizontally by the time it hits the ground, rounded to the
nearest tenth of a
metre?
c) At what time(s), rounded to the nearest tenth of a second, will the airplane reach a height of
�� �?
d) What is the maximum height or the plane?
Answer by greenestamps(13209)   (Show Source):
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