Problema Solution
An object is thrown downward with an initial velocity of 5 feet per second. The relationship between the distance s it travels and time t is given by s=5t+16t^2. How long does it take the object to fall 74 feet?
Answer provided by our tutors
5t+16t^2 = 74
by solving we find and consider he positive roots (since time can not be negative)
t = 2 sec
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it takes 2 second for the object to fall to 74 ft.