1The height of a baseball after it is hit by a bat is modelled by the function h(t) = -4.8t² + 21t + 1.2 where h(t) is the height in meters above the ground and t is the time in seconds after the ball was hit. a) Write down the height of the ball above the ground at the instant it is hit by the bat. b) Find the value of t when the ball hits the ground. c) State the appropriate domain for t in this model.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
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1The height of a baseball after it is hit by a bat is modelled by the function
h(t) = -4.8t² + 21t + 1.2
where h(t) is the height in meters above the ground and t is the time in seconds after the ball
was hit.
a) Write down the height of the ball above the ground at the instant it is
hit by the bat.
b) Find the value of t when the ball hits the ground.
c) State the appropriate domain for t in this model.
Transcribed Image Text:1The height of a baseball after it is hit by a bat is modelled by the function h(t) = -4.8t² + 21t + 1.2 where h(t) is the height in meters above the ground and t is the time in seconds after the ball was hit. a) Write down the height of the ball above the ground at the instant it is hit by the bat. b) Find the value of t when the ball hits the ground. c) State the appropriate domain for t in this model.
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