Which statement about how light travels is true?
Choose one answer.
a. Light waves can travel in a vacuum and travel at a constant speed even if the light source is moving.
b. Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.
c. Light waves can travel in a vacuum and will travel faster if the light source is moving forward.
d. Light waves need a medium to travel, and they travel faster if the light source is moving forward.
a?
@agent0smith

Question

Which statement about how light travels is true?
Choose one answer.
	 a. Light waves can travel in a vacuum and travel at a constant speed even if the light source is moving.	
	 b. Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.	
	 c. Light waves can travel in a vacuum and will travel faster if the light source is moving forward.	
	 d. Light waves need a medium to travel, and they travel faster if the light source is moving forward.
a?
@agent0smith

anonymous · Answer

or c.....

agent0smith · Answer

Between a and c, use your answer from the last question to help you decide :)

anonymous · Answer

lol b :/

anonymous · Answer

or maybe ........ idk

agent0smith · Answer

Read this answer : http://openstudy.com/study#/updates/52e960a3e4b042661d4d7114 from there, you know that: light travels in a vacuum (doesn't need a medium), and that it travels at constant speed regardless of the source.

anonymous · Answer

yeah i was just gonna say that - and now im confused! cuz light doesnt need a medium it travels through space...

anonymous · Answer

its a!

agent0smith · Answer

Good job :)

anonymous · Answer

cuz thats what i said the first time and then u confused me...

agent0smith · Answer

lol i said BETWEEN a and c... and then you chose b :P

anonymous · Answer

>.< haha

anonymous · Answer

THATS BECUZ B IS BETWEEN A AND C XD

anonymous · Answer

hahaha i didnt get it XD im laughing so hard now

agent0smith · Answer

LOLLLL hahaha i meant CHOOSE between a and c :P

anonymous · Answer

well i didnt know that XD

agent0smith · Answer

haha i am sorry, i should've said choose between them :P

anonymous · Answer

bleh :P haha

agent0smith · Answer

i blame you, your fault :P

anonymous · Answer

oh go jump in a lake XD

anonymous · Answer

jk jk dont drown

agent0smith · Answer

:O ahaha i will not drown, i can swim, cos i'm not an airhead... 

you shouldn't jump in a lake though... :P

anonymous · Answer

well i took 5 years of swimming lessons so i wouldnt drown either XD

agent0smith · Answer

well... okay... let's go swimming in a lake together then! Nobody will drown! :D

anonymous · Answer

ok *now* this needs to be taken off the question comment section XD

agent0smith · Answer

no it doesn't! we're goin swimming!