No se como llenar esto, porfa ayudenme!

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

What does the symbol (–hfus) indicate in a phase change?