Multiple Choice
A particle that is moving along a straight line decelerates uniformly from 40 cm/s to 20 cm/s in 5.0 s and then has a constant acceleration of 20 cm/s2 during the next 4.0 s.The average speed over the whole time interval is
A) 57 cm/s
B) 140 cm/s
C) 86 cm/s
D) 43 cm/s
E) 97 cm/s
Correct Answer:
Verified
Correct Answer:
Verified
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