Problema Solution
the formula d=16t^2 relates time and distance for a falling object (d is the distance in feet and t is the time in seconds). calculate the time until a rock hits the ground if dropped from a height of 256 feet.
Answer provided by our tutors
d = 16t^2
for d = 256 ft we need to find t, t=>0
plug d = 256 into d = 16t^2 and solve for t:
16t^2 = 256
by solving we find:
t = 4 s
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the rock will hit the ground in 4 seconds.