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anonymous
 one year ago
A car travels 100 meters in 5 seconds. What is the speed of the car?
speed = distance over time; 1 mile = 1609 meters
anonymous
 one year ago
A car travels 100 meters in 5 seconds. What is the speed of the car? speed = distance over time; 1 mile = 1609 meters

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i need a walk through

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1by definition, the speed of the car is: \[\Large speed = \frac{{{\text{distance}}}}{{{\text{time}}}}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0100 miles is distance and

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So how much is 100m in miles?? 100/1609 right? :D And how much is 5 seconds in hours? 5/3600 right? :D So miles/hour = \[\frac{ 100 }{ 1609 }*\frac{ 3600 }{ 5 }\] 44.7 miles

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0if you multiply both values by 12 you will know how many metres in 1 minute this is because 12 x 5 = 60 then multiply the answer by 60 to find how many metres in 1 hour does that make sense..?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large speed = \frac{{{\text{distance}}}}{{{\text{time}}}} = \frac{{100}}{5} = ...miles/\sec \]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1correct! it is 20 miles/seconds

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1we can change unit of measure, namely we can measure that speed in Km/hour

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so 20 is the right answer not what they said?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.120 miles /seconds, is your speed, and as you can see , the corresponding unit of measure is miles/seconds

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1nevertheless, if we want to change unit of measure, of course, we get a different answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so thats all i had to do

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Buttercup214 its 20

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! if you want the speed in miles/seconds, that is all!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry i forgot to say thank you.
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