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etwerner23
13.04.2021 •
Physics
The coordinate of a particle in meters is given by x(t) = 16t − 3.0t3, where the time t is in seconds. The particle is momentarily at rest at t
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Ответ:
t = -4/3 s, t = 4/3 s
Explanation:
I am ASSUMING that you want to know the time(s) the particle is at rest.
and that your position equation is x(t) = 16t − 3.0t³
IF those assumptions are true
THEN
velocity is the derivative of position
v(t) = 16 - 9t²
the particle will be at rest when velocity is zero
0 = 16 - 9t²
9t² = 16
t² = 16/9
t = ± 4/3
Ответ:
a=?
Vf=15.0m/s
Vi=6.0m/s
t=3.0s
a=Vf-Vi/t
a=15.0-6.0/3.0
a=9/3
a=3m/s^2
Explanation: