Arhinoceros is at the origin of coordinates at time t1 = 0. for the time interval from t1 = 0 to t2 = 21.5 s, the rhino's average velocity has x-component -3.8 m/s and y-component 4.5 m/s. (a) at time t2 = 21.5 s, what are the x and y coordinates of the rhino? (b) how far is the rhino from the origin? ans: - -81.7 m, 96.8 m. 127m,

A) The rhino's average velocity on the x-axis is . The position x after time t=21.5 s can be found by using the relationship:

where we used  as the x-position at time t=0, since the rhino was at the origin.

SImilarly, the average velocity on the y-axis is , and the y-position after time t=21.5 s can be found by using:

where we used  since the the rhino was at the origin at time t=0.

b) The distance of the rhino from the origin can be calculated by calculating the resultant of the displacement of the rhino on both axes: