Answer to Question #340376 in Mechanics | Relativity for Amber

Question #340376

The position of a particle is given by r(t) = -3.1 t i + 0.72 t4 j m, where t is in seconds. At t = 1.9 s, what is the magnitude of the particle’s acceleration?

Expert's answer

"a=\\ddot r=8.64t^2\\vec j,"

"a(t)=31.2\\vec j."

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