(Solved):     An Australian emu is running due north in a straight line at a speed of \( 13.0 \ ...

 

 

An Australian emu is running due north in a straight line at a speed of \( 13.0 \mathrm{~m} / \mathrm{s} \) and slows down to a speed of \( 9.70 \mathrm{~m} / \mathrm{s} \) in \( 3.60 \) s. (a) What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's velocity after an additional \( 2.80 \) s has elapsed? (a) Number (b) Number Units Two soccer players start from rest, \( 39 \mathrm{~m} \) apart. They run directly toward each other, both players accelerating. The first player's acceleration has a magnitude of \( 0.44 \mathrm{~m} / \mathrm{s}^{2} \). The second player's acceleration has a magnitude of \( 0.50 \mathrm{~m} / \mathrm{s}^{2} \). (a) How much time passes before the players collide? (b) At the instant they collide, how far has the first player run? (a) Number Units (b) Number Units