anna4060
06.09.2020 •
Mathematics
A particle moves on a straight line and cover a displacement x metres in time t seconds. If the displacement is in form of equation given below. Find its acceleration after 2 seconds. x = 5t^3 - t^2 + 1
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Ответ:
58 m / s²
Step-by-step explanation:
The rate of change of displacement is velocity v
The rate of change of velocity is acceleration a , thus
v =
= 15t² - 2t , then
a =
= 30t - 2
After 2 seconds
a = 30(2) - 2 = 60 - 2 = 58 m/ s²
Ответ:
92 inches squared
Step-by-step explanation:
T/P = 8 * 3
L/R = 3 * 2
F/B = 8 * 2
Solving for surface area!
2(24) + 2(6) + 2(16) = 92