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Distance, Displacement, Speed, Velocity and Acceleration problem 4

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An object has an initial velocity and an acceleration . The object moves in a straight line through a displacement and has final velocity .

The above quantities are related by the equation shown.

Which condition must be satisfied in order for this equation to apply to the motion of the object?

The direction of is constant and the direction of is the same as the direction of .
The direction of is constant and the direction of is the same as the direction of .
The magnitude of is constant and the direction of is constant.
The magnitude of is constant and the direction of is the same as the direction of .

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