The function f(x) = –16x2 + 64x + 200 models the height of a model rocket, f(x), in feet, x seconds after it was launched. After
how many seconds did the rocket reach its maximum height?
A. 2 seconds
B. 4 seconds
C. 64 seconds
D. 256 seconds
A. 2 seconds
B. 4 seconds
C. 64 seconds
D. 256 seconds
2 answers:
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Answer:
The distance covered is 113.75 m
Step-by-step explanation:
As per the question:
The initial velocity of the train, v = 20 m/s
The final velocity of the train, v' = 6 m/s
Uniform deceleration, a = 1.6
Or uniform acceleration, a = - 1.6
<em>Here, the body decelerates, i.e., slows down at a uniform rate thus we take acceleration with negative sign.</em>
Now, to find the distance covered, s:
Using the eqn of Kinemetics: