- #1
nysnacc
- 184
- 3
Homework Statement
I forgot if the deceleration is -0.003v or same here -0.003v2
Homework Equations
v = u + at (first acceleration)
dv/dt = a (deceleratioin) = -0.003v^2
The Attempt at a Solution
From first equation,
342.2 = 0 + 30*t1
t1= 11.407s
From 2nd equation,
dv/v2 = -0.003
[-1/3.422] - [-1/342.2] = -0.003 (t2-t1)
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If the decelerate is -0.003v
dv/v = -0.003
ln (3.422) - ln (342.2) = -0.003 (t2-t1)
t2 (total time) = 1544.46 s
Is the answer making sense?