25 points. Similarity in triangles
1 answer:
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Answer:
t = 9.08 sec
Explanation :
This requires the use of the kinematic equations.
u = initial velocity = 21.8 m/s
v = final velocity = 0
t = time = what we're trying to find.
So we use the equation that relates d, u, v and t. This is
d = distance = 99m
d =
and since v = 0 this reduces to d =
which rearranges to t =
t = =9.08 seconds
t = 9.08 sec