Select one: a. 0.20 m/s 2 b. 0.14 m/s 2 c. 0.19 m/s 2 d. 0.17 m/s 2 e. 0.16 m/s

Question

Select one: a. 0.20 m/s2 b. 0.14 m/s2 c. 0.19 m/s2 d. 0.17 m/s2 e. 0.16 m/s2 Select one: a. 0.20 m/s2 b. 0.14 m/s2 c. 0.19 m/s2 d. 0.17 m/s2 e. 0.16 m/s2 a. 0.20 m/s2 b. 0.14 m/s2 c. 0.19 m/s2 d. 0.17 m/s2 e. 0.16 m/s2 A train starts from rest and accelerates uniformly, until it has traveled 5.6 km and acquired a velocity of The train then moves at a constant velocity of for 420 s. The train then slows down uniformly at until it is brought to a halt. The acceleration during the first 5.6 km of travel is closest to: Select one: 0.20 m/s2 0.14 m/s2 0.19 m/s2 0.17 m/s2 0.16 m/s2

Explanation / Answer

11. The answer is A because the average speed is 21 m/s so the time in seconds is 5600/21 and the acceleration is 42 divided by that.

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