Please help me answer all 3!! will mark brainliest if you answer all 3 questions :) don’t steal for points please

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Write a polynomial function with the given zeros x= -1,0,2show your work

An atom that has gained or lost electrons is called an _