Select the case that most fully and accurately describes an accelerating mass. I. It moves in...

Select the case that most fully and accurately describes an accelerating mass.

I. It moves in a straight line at constant speed.

I I. It moves in a circle at a constant speed.

III. It free falls with insignificant atmospheric friction.

Expert Solution

the case which fully and most accurately describes the accelerating mass : "It free falls with insignificant atmospheric friction ".

It is so because the mass which is in free fall motion , it moves under the influence of acceleration due to gravity , Thus it keeps on acceleration with an acceleration equal to the acceleration due to gravity which has a value = 9.8 m/s^2 ( near the surface of the Earth).

It must be noted that the mass which is moving at a constant speed in a circle is also accelerating with the influence of centripetal force and acceleration in that case is known as centripetal acceleartion whose value can be calculated with the formula : V^2/R

where V is the constant speed with which the mass is moving in the circle and R is the radius of the circle.

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Please kindly upvote if you are satisfied with the solution.

Thank you.

genius_generous answered 2 years ago

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