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A projectile is launched from ground level with an initial velocity of vo feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by s = − 16t² + vot. Find the time(s) that the projectile will (a) reach a height of 64 ft and (b) return to the ground when vo= 80 feet per second. (a) Find the time(s) that the projectile will reach a height of 64 ft when vo= 80 feet per second. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A projectile is launched from ground level with an initial velocity of vo feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by s = − 16t² + vot. Find the time(s) that the projectile will (a) reach a height of 64 ft and (b) return to the ground when vo= 80 feet per second. (a) Find the time(s) that the projectile will reach a height of 64 ft when vo= 80 feet per second. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

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ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
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A projectile is launched from ground level with an initial velocity of vo feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by s = − 16t² + vot. Find the time(s) that the projectile will (a) reach a height of 64 ft and (b) return to the ground when vo= 80 feet per second. (a) Find the time(s) that the projectile will reach a height of 64 ft when vo= 80 feet per second. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
Transcribed Image Text:A projectile is launched from ground level with an initial velocity of vo feet per second. Neglecting air resistance, its height in feet t seconds after launch is given by s = − 16t² + vot. Find the time(s) that the projectile will (a) reach a height of 64 ft and (b) return to the ground when vo= 80 feet per second. (a) Find the time(s) that the projectile will reach a height of 64 ft when vo= 80 feet per second. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
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