An object thrown straight up a distance ymaxymax. after tt seconds, it falls back and is caught again, just as it reaches the height from which it was thrown. claudia says its average velocity was zero, and hossein says its average speed was 2ymaxt2ymaxt . what would you say to them out?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.