7) Place the following in order of increasing radius. Ca2+ S2-CH-
1 port
O
A) Ca2+ < Cl< 52
O
B) CI-< Ca2+ < S2
O
C) 52 <CI < Ca2+
O
D) Ca2+ < S2 <CH
O
E CI < S2 <Ca2+

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here