At time t = 0 s, automobile A is traveling at a speed of 17 m/s along a straight

Question

At time t = 0 s, automobile A is traveling at a speed of 17 m/s along a straight road and is picking up speed with an acceleration that has a magnitude of 3. 2 m/s^2 as in part a of the figure. At t = O s, automobile B is traveling at a speed of 17 m/s in uniform circular motion as it negotiates a turn (part b of the figure). It has a centripetal acceleration whose magnitude is also 3. 2 m/s^2. Which automobile has a constant acceleration For which automobile do the equations of kinematics apply? Calculations: Determine the speed of each automobile when tf = 2. 1 s. automobile A m/s automobile B m/s

Explanation / Answer

claculation

apply kinematics eq for automobile A

V = u +at = 17 + 3.2*2.1 = 23.72 m/s

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