{"title":"The acceleration of an object...","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,24,40,86\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"}{"title":"...is proportional to and in the same direction as the net external force on the object...","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"209,17,246,79\"}]"}{"title":"... and inversely proportional to the mass of the object","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"113,132\"},{\"shape\":\"rect\",\"coords\":\"88,74,138,109\"}]"}
{"title":"The acceleration of an object...","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,24,40,86\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"}{"title":"...is proportional to and in the same direction as the net external force on the object...","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"209,17,246,79\"}]"}{"title":"... and inversely proportional to the mass of the object","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"113,132\"},{\"shape\":\"rect\",\"coords\":\"88,74,138,109\"}]"}
{"title":"The acceleration of an object...","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,24,40,86\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"}{"title":"...is proportional to and in the same direction as the net external force on the object...","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"118,11,119,13\"},{\"shape\":\"rect\",\"coords\":\"209,17,246,79\"}]"}{"title":"... and inversely proportional to the mass of the object","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"113,132\"},{\"shape\":\"rect\",\"coords\":\"88,74,138,109\"}]"}
Review
To see the significance of mass more clearly, divide both sides of Equation 4-2 by the object’s mass \(m\):