In the first 10s of a body s motion, the velocity changes from 10 m/s – McqOptions

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1.	In the first 10s of a body s motion, the velocity changes from 10 m/s to 20m/s. During the next 30s the velocity changes from 20m/s to 50m/s. What is the average acceleration in m/s²?
A.	1
B.	2
C.	3
D.	0.5
Answer» B. 2

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