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nthenic_oftime
 one year ago
any help would be great :) ...
If the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If an object with a mass of 9 kilograms accelerates at a rate of 6 meters per second per second by a force, find the rate of acceleration of an object with a mass of 2 kilograms that is pulled by the same force.
A. 3 meters per second per second
B. 27 meters per second per second
C. 18 meters per second per second
D. 24 meters per second per second
nthenic_oftime
 one year ago
any help would be great :) ... If the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If an object with a mass of 9 kilograms accelerates at a rate of 6 meters per second per second by a force, find the rate of acceleration of an object with a mass of 2 kilograms that is pulled by the same force. A. 3 meters per second per second B. 27 meters per second per second C. 18 meters per second per second D. 24 meters per second per second

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Use Newtons second law of motion Force = mass * acceleration

baru
 one year ago
Best ResponseYou've already chosen the best response.1@nthenic_oftime have you started with physics...or is this a problem from math class?

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0@baru i know some physics bt this is from math

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1F = 9*6 = 54 N for the mass of 2 kg: 54 = 2 a

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0thank you @welshfella

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0wait wouldnt i have to do 2*6 because its asking for object with mass of 2kg at same force

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1the force is 54 N 6 is the acceleration for the 9 kg mass

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1acceleration for 2 kg mass = 54/2

baru
 one year ago
Best ResponseYou've already chosen the best response.1@welshfella i think this is an exercise in ratios...not physics..he/she is not very familiar with force

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0ooh okay get it we found the force first and then found rate of acceleration of the 2kg mass gotchya

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0i dont understand why this is on a math test when to me it seems like physics

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1well physics is often 'applied math'.

baru
 one year ago
Best ResponseYou've already chosen the best response.1you are supposed to understand how "inverse proportionality" works

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1yea when a is inversely proportional to m we can write a = k / m where k is some constant in the above case the constant is the force (54)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1you can find the value of k by plugging in known values of a and m ( 6 and 9) 6 = k/9 so k = 6*9 = 54 know we have established the formula for a in terms of m a = 54/m so knowing the value of a or m we can find the other variable

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1so when m = 2 a = 54/ 2

nthenic_oftime
 one year ago
Best ResponseYou've already chosen the best response.0okay @welshfella thats what i was seeing in my mind or what made sense i didnt know it had a name thank you for that info too

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1with inverse variation as one variable increses the other decreases and vice versa
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