4. Marcus Tardee is driving his friends to school. With the start of school bein

Question

4. Marcus Tardee is driving his friends to school. With the start of school being only minutes away, he is nfortunately following a slow garbage truck. The truck finally turns down a side street and Marcus ccelerates to a much more customary speed. The velocity-time graph below represents his motion. Use he graph to answer the following questions. -24.03 20· , 1609 E 12.0 8.00 ') . 0.00 2.00 4.00 .00 8.00 10.0 000-400,00 2.0 2667 time (s) G 00 a. How fast was Marcus traveling while following the garbage truck? L.vn /S b. Determine the distance traveled during the first 4.0 seconds represented on the graph.low C. Determine the acceleration of the car once the garbage truck turned onto the side street. 2 6 7 d. Determine the distance traveled by the car during the last 6.0 seconds of motion. 72 Oem

Explanation / Answer

a) 4 m/s

b) d=vt = 4 m/s * 4 = 16m

c) a= (vf-vi)/t= (20 m/s-4 m/s)/ (10-4)=2.67 m/s2

d) d= (vi+vf)/2 *t = (20+4)/2 * 6= 72

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