Question #3b038

1 Answer
Nov 7, 2017

12 sec

Explanation:

Consider this formula:

D = v_it + 0.5at^2

The initial velocity v_i is ZERO

Since the first term of the equation canceled,we can work out the time by using the second part.

D = 0.5at^2

t^2 =D/(0.5a)=(2D)/a

t =sqrt((2D)/a)

plug in the numbers into the equation to get the answer.
t=sqrt((2*245)/3.44)=11.93... (s).