If a baseball player hits a baseball from 4 feet off the ground with an initial velocity of 64 feet per second, how long will it take the baseball to hit the ground? Use the equation h = −16t2 + 4t + 4. Round your answer to the nearest hundredth. 0.36 0.39 0.61 0.64
Accepted Solution
A:
Answer:0.64 seconds.Step-by-step explanation:When it hits the ground h(t) = 0.0 = -16t^2 + 4t + 4-4(4t^2 - t -1) = 0 t = [-(-1) +/- sqrt (1 - 4*4*-1)] / 8)t = 0.64, -0.39 answer is 0.64 seconds.