Two projectiles are fired into the air over a lake, with the height of the first projectile given by y = 140 + 120t - 16t and the height of the second projectile given by y= - 16t + 190t, where y is in feet and t is in seconds. Before either projectile hits the lake, determine the time interval in which the second projectile is above the first projectile. Before the lower one hits the lake, the second projectile is above the first over the time interval (Type an inequality or a compound inequality. Use integers or decimals for any numbers in the expression. Round to two decmal places as needed.)
Two projectiles are fired into the air over a lake, with the height of the first projectile given by y = 140 + 120t - 16t and the height of the second projectile given by y= - 16t + 190t, where y is in feet and t is in seconds. Before either projectile hits the lake, determine the time interval in which the second projectile is above the first projectile. Before the lower one hits the lake, the second projectile is above the first over the time interval (Type an inequality or a compound inequality. Use integers or decimals for any numbers in the expression. Round to two decmal places as needed.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Two projectiles are fired into the air over a lake, with the height of the first projectile given by y = 140 + 120t - 16t and the height of the second projectile given by y= - 16t + 190t, where y is in feet and t is in seconds. Before either projectile hits the lake,
determine the time interval in which the second projectile is above the first projectile.
Before the lower one hits the lake, the second projectile is above the first over the time interval
(Type an inequality or a compound inequality. Use integers or decimals for any numbers in the expression. Round to two decmal places as needed.)
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