An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s.If west is chosen as the positive direction,what is the average speed of the object?
A)0.50 m/s
B)-0.50 m/s
C)0.73 m/s
D)0 m/s

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The Answer of An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s.If west is chosen as the positive direction,what is the average speed of the object?
A)0.50 m/s
B)-0.50 m/s
C)0.73 m/s
D)0 m/s

An Object Moves 20 M East in 30 S and Then