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A student writes in their Lab report for this experiment on constant velocity: “the velocity was...

A student writes in their Lab report for this experiment on constant velocity: “the velocity was measured to be 3.0 m/s as the cart reached the middle of the track”. Why did the student lose points in their report? Choose best answer from the following:

(a) It is not clear where the middle of the track is.

(b) Velocity is a vector and the student did not give a direction.

(c) Velocities should be measured in cm/s.

(d) The student used too many significant figures.

(e) The student used too few significant figures. (f) In this experiment, you can’t measure the velocity of an object if it is in the middle of the track.

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Answer #1

b).

Velocity is a vector quantity which consist of magnitude as well as direction. In the given report student didn't mention about the direction.

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