A ball is dropped from a platform 19.6m high. Its position function is

1.	A ball is dropped from a platform 19.6m high. Its position function is ?
A.	\[x=-4.9{{t}^{2}}+19.6(0\le t\le 1)\]
B.	\[x=-4.9{{t}^{2}}+19.6(0\le t\le 2)\]
C.	\[x=-9.8{{t}^{2}}+19.6(0\le t\le 2)\]
D.	\[x=-4.9{{t}^{2}}-19.6(0\le t\le 2)\]
Answer» C. \[x=-9.8{{t}^{2}}+19.6(0\le t\le 2)\]

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A ball is dropped from a platform 19.6m high. Its position function is ?

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