 #1
jamiebean
 55
 3
 Homework Statement:

The position of a particle is
4.9t^{3}\hat{i} +4.4t^{4}\hat{j} m . what is the x component of the acceleration at time 3.4 s in unit of ms2? t denotes time in second.
 Relevant Equations:
 d=vi x t + 0.5at^2
I intended to finish the question with the equation of linear motion with constant acceleration, but it didn't work out. And I have no idea about the t^3 and t^4 of the position. How can I find the x component of the acceleration at time 3.4 s ? Where is the acceleration rate?