Question

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Which example below provides a complete scientific description of an object in motion?
A. The marble changed position quickly.
B. The car traveled north.
C. The marble moved 30 cm north in 6 seconds.
D. The ball rolled 20 cm in 5 seconds.

Answer 1

a because the marble changed its position quickly meaning that it was in motion

Answer 2

The testbook answer is C. The marble moved 30 cm north in 6 seconds