Which element is a metalloid? check all that apply. selenium (se) polonium (po) silicon (si) iodine (i) tin (sn) antimony (sb) phosphorus (p)

Polonium (Po), Silicon (Si), Antimony(Sb)

Explanation: Metalloids are the elements which exhibits some properties of both metals and non-metals. They are generally called as  semi-metal. There are in total 7 metalloids in whole periodic table. They are:

Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Telurium (Te) and Polonium (Po).

From, the list and periodic table attached, it is visible that only Silicon, Polonium and antimony are the metalloids from the elements given.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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