Answer to Question #140978 in Math for Ali Atwi

Question

Answer by true or false and correct the false ones
1)The trajectory of a moving particle doesn't depend on the chosen frame of referance.
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2)All the points of a solid in a translational motion have identical trajectories.
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3)The motion of a solid is said to be rotational when the trajectory of one of its points is a straight line.
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4)During a translational motion all the points of a solid rotate around fixed axis.
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5)A moving body performs a translational motion is any segment of this body keeps the same direction while moving.
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Answer 1

SOLUTION

1)The trajectory of a moving particle doesn't depend on the chosen frame of reference.

TRUE

2)All the points of a solid in a translational motion have identical trajectories.

TRUE

3)The motion of a solid is said to be rotational when the trajectory of one of its points is a straight line.

FALSE (Because the object turns about an axis and change of orientation takes place)

4)During a translational motion all the points of a solid rotate around fixed axis.

FALSE (This is a case of rotational motion because in translational motion, there is no change in the orientation relative to a fixed point and all points of a moving body move uniformly in the same direction)

5)A moving body performs a translational motion is any segment of this body keeps the same direction while moving.

TRUE