16. In a volleyball match, Jenny se volleyball at 14 m/s, from a he above the court. The height of flight can be estimated using

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ISBN:9780470458365
Author:Erwin Kreyszig
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Can you please help me do this using the quadratic formula
16. In a volleyball match, Jenny serves the
volleyball at 14 m/s, from a height of 2.5 m
above the court. The height of the ball in
flight can be estimated using the equation
h = -4.9t2 + 14t + 2.5, where h is the
height, in metres, and t is the time, in
seconds, after she serves the ball.
a) What is the maximum height of the
volleyball above the court? When does
this occur? Round answers to the
nearest tenth.
b) If a player on the other team contacts
the ball at a height of 0.5 m above the
court, how long does it take for the ball
to reach her? Round to the nearest
second.
.... ..
Transcribed Image Text:16. In a volleyball match, Jenny serves the volleyball at 14 m/s, from a height of 2.5 m above the court. The height of the ball in flight can be estimated using the equation h = -4.9t2 + 14t + 2.5, where h is the height, in metres, and t is the time, in seconds, after she serves the ball. a) What is the maximum height of the volleyball above the court? When does this occur? Round answers to the nearest tenth. b) If a player on the other team contacts the ball at a height of 0.5 m above the court, how long does it take for the ball to reach her? Round to the nearest second. .... ..
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