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Classical Mechanics

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Validity of the Equation of Motion

CLMECH-D0YYQE

Under certain conditions, the following equation describes position $y$ as a function of time $t$ of an object moving with acceleration $a$:

$$y = \frac{1}{2} a \cdot t^2$$

Which of the following conditions must be fulfilled for this equation to be applicable?

Select ALL that apply.

A

The object must be in free fall motion.

B

The initial velocity of the object must be zero.

C

The acceleration of the object must be constant.

D

The acceleration of the object must be $9.8 \text{ m/s}^2$.

E

The position of the object must be measured from the point where the motion starts.

F

The acceleration of the object must change uniformly with time.