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## Homework Statement

The motion of a particle moving in a circle in the x-y plane is described by the equations: r(t)=9.71, theta(t)=8.74t. Where theta is the polar angle measured counter clockwise from the + x-axis in radians, and r is the distance from the origin in m.

A. Calculate the y-coordinate of the particle at the time 1.60s.

B. Calculate the y-component of the velocity at the time 3.40s.

C. Calculate the magnitude of the acceleration of the particle at the time 1s.

D. By how much does the speed of the particle change from t=10s to t=67s?

E. Calculate the x-component of the acceleration at the time 2.20s.

## Homework Equations

r(t)=9.71

theta(t)=8.74t

## The Attempt at a Solution

I usually try to make several attempts before I ask for help, but I don't even know where to begin! How do I go about this 5 part problem? Please help me