# Quiz8 - Physics 7B S10 Quiz 8 Last Grade: Student...

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Unformatted text preview: Physics 7B S10 Quiz 8 Last Grade: Student ID: Name: , Sec #: First 1)  Lance Armstrong is riding his bike. He begins at rest, then starts moving to the right with an acceleraFon of magnitude 3 m/s2 for 4s. He then coasts with zero acceleraFon for 5s. Finally, he applies his brakes which provide him with a constant acceleraFon for 2s and brings him to a stop. This problem will ask you to plot the same physical moFon in two diﬀerent ways. The plots only need to be qualitaFvely correct. No numbers are needed on the plots. B) Plot his acceleraFon, velocity and posiFon as a funcFon of Fme. Assume that his ﬁnal posiFon is x=0 and that le^ is posiFve and right is negaFve A) Plot his acceleraFon, velocity and posiFon as a funcFon of Fme. Assume that his iniFal posiFon is x=0 and that right is posiFve and le^ is negaFve a t a t v t v t x t x t Useful EquaFons: x(t)=x0+v0t+1/2 a t2; v(t)=v0+a t; v = dx / dt; a = dv / dt ...
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