A rolling ball moves from x1 = 8.0 cm to x2 = -4.1 cm during the time from t1 = 2.9 s to t2 = 6.0 s .

Complete Question

A rolling ball moves from to during the time from  to  

What is its average velocity over this time interval?

The velocity is  

Explanation:

From the question we are told that

    The first position of the ball is  

    The second position of the ball is  

Generally the average velocity is mathematically represented as

=>    

=>    

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.