Motion In A Plane

Step 1: Understanding the position in polar coordinates.
The position of the object is given by and . We need to find the acceleration of the object. Step 2: Finding velocity.
In polar coordinates, the velocity is given by the derivative of position with respect to time: Using the given equations for and , we find: Step 3: Finding acceleration.
The acceleration in polar coordinates is given by: Calculating these, we get the total acceleration magnitude at as 9 m/s².