Activity 3 Motion in Two or Three Dimensions 1 Problem: A rhinoceros is at the origin of coordinates at time f - 0. For the time interval from 1 = 0 to to- 12.0 s, the rhino's average velocity has x-component -3.8 m/s and y-component 4.9 m/s, At time -12.0 9. (a) what are the x- and y-coordinates of the chino? (b) How far is the chino from the origin? Problem: A jet plane is flying at a constant altitude, At time fo = 0, it has components of velocity D: - 90 my/s, D - 110 m/s. At time f - 30.0s, the components are D - -170m/s, ", - 10mv's. (a) Sketch the velocity vectors at to and bo. How do these two vectors differ? For this time interval calculate (b) the components of the average acceleration and (c the magnitude and direction of the average acceleration. Problem: Crickets Chirpy and Milada jump from the top of a vertical clift. Chirpy drops downward and reaches the ground in 270 s, while Milada jumps horizontally with an initial speed of 95.0 om/s. How far from the base of the chiff will Milada hit the ground? Ignore air resistance. 4 Problem: Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness. Suppose that a skater is spinning very fast at 3.0 revolutions per second about a vertical axis through the center of his head. Take the inner ear to be approximately 7.0 cm from the axis of spin. (The distance varies from person to person.) What is the racial acceleration (in mys' and in g's) of the endo lymph fluid? 5 Problem: A canoe has a velocity of 0.40 m/s southeast relative to the earth. The canoe is on a river that is flowing 050 m/s east relative to the earth. Find the velocity (magnitude and direction) of the canoe relative to the river