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The velocity of a train is 80.0 km/h, due west. One and a half hours later its velocity is 65.0 km/h, due west. What is the train s average acceleration?
(a) 10.0 km/h2, due west
(b) 43.3 km/h2, due west
(c) 10.0 km/h2, due east
(d) 43.3 km/h2, due east
(e) 53.3 km/h2, due east? |
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