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Deceleration of 5m/s, how long will it take to come to rest?7 The tape in Figure 2.7 was pulled through a timer by atrolley travelling down a runway. It was marked off intentick lengths.a What can you say about the trolley's motion?b Find its acceleration in cm/s22 16 m in 453 with a uniform acceleration of 2 m/s2Which statement(s) is (are) correct?A 1,2,3 B 1,2 C 2,3 D 1 E 310 If a train travelling at 10 m/s starts to accelerate at 1 mfor 15s on a straight track, its final velocity in m/s isA 5 B 10 C15 D20 E 257cm2 cm15 cm26 cm |
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Answer» Answer: The tape in Figure 2.7 was pulled through a timer by a trolley travelling down a runway. It was marked off in tentick lengths. a What can you say about the trolley's motion? b FIND its ACCELERATION in cm/s2 2 16 m in 45 3 with a UNIFORM acceleration of 2 m/s2 Which statement(s) is (are) CORRECT? A 1,2,3 B 1,2 C 2,3 D 1 E 3 10 If a train travelling at 10 m/s starts to ACCELERATE at 1 m for 15s on a straight track, its final velocity in m/s is A 5 B 10 C15 D20 E 25 |
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