When Apollo 15 launched, it had a kinetic energy of 1.45•10J to the power of (11). As it rose it burned fuel to increase its velocity, causing its mass to decrease by a factor of 4 while getting 6 times faster. What was Apollo 15's kinetic energy at this point?

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the answer is definitely c.