The correct answer is x-rays
Answer:
s = 90 m
a = 56 m/s²
Explanation:
I will ASSUME that your equation is silly as it reduces to V = 11t which is constant, and that you mean V = 9t² + 2t
Position is the integral of differential velocities
s = ![\int\limits^3_0 {9t^2 + 2t} \, dt](https://tex.z-dn.net/?f=%5Cint%5Climits%5E3_0%20%7B9t%5E2%20%2B%202t%7D%20%5C%2C%20dt)
s = 3t³ + t² | from 0 to 3
s = 3(3)³ + 3² - (0) = 90 m
acceleration is the derivative of velocity
a = v' = 18t + 2
a(3) = 18(3) + 2 = 56 m/s²
that would be given by
[email protected]
@ representing coefficient of kinetic friction.
thus 19.5/51.7 = 0.377