​Use the Position Equation S = -16t² + V₀t

question 39

Multiple Choice

​Use the position equation s = -16t² + v₀t + s₀ to write a function that represents the situation and give the average velocity of the object from time t₁ to time t₂. An object is thrown upward from a height of 38 feet at a velocity of 84 feet per second.
T₁ = 1,t₂ = 3

• A)​s = -16t² + 38t + 84;avg.velocity = 79 ft/s
• B)​s = -16t² + 84t + 38;avg.velocity = 125 ft/s
• C)​s = -16t² + 38t + 84;avg.velocity = -26 ft/s
• D)​s = -16t² + 84t + 38;avg.velocity = 20 ft/s
• E)​s = -16t² + 84t + 38;avg.velocity = 40 ft/s

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