a moon is about 120,000 miles from the planet it orbits.

a) write this number in scientific notation ( which i already did :-) )

b) if a rocket traveled 3*10 to the fourth power miles per hour, how long would it take for it to reach the moon from the planet?

Question

a moon is about 120,000 miles from the planet it orbits.

a) write this number in scientific notation ( which i already did :-) )

b) if a rocket traveled 3*10 to the fourth power miles per hour, how long would it take for it to  reach the moon from the planet?

welshfella · Answer

1.2 * 10^5 / 3 * 10^4

welshfella · Answer

you might find it easier to convert to standard numbers 
120,000 and  standard form of 3 * 10^4

erniellyd28 · Answer

do i multiply the 2 answers to get my final answer?

welshfella · Answer

No  you divide 
v = d / t

so t  = d / v

erniellyd28 · Answer

but dont i suppose to multiply 3 times 10 to the fourth power?

welshfella · Answer

oh yes - you mean converting to standard form 
3 * 10^4  = what in standard form?

erniellyd28 · Answer

30,000

erniellyd28 · Answer

am i correct?

erniellyd28 · Answer

is the final answer 4 hours :-) ?

welshfella · Answer

yes  120,000 / 30,000 = 4 hours

erniellyd28 · Answer

thank you very much :-)

welshfella · Answer

yw