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Broad Topics > Pre-Calculus and Calculus > First order differential equations

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It's Only a Minus Sign

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Solve these differential equations to see how a minus sign can change the answer

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Out in Space

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

A space craft is ten thousand kilometres from the centre of the Earth moving away at 10 km per second. At what distance will it have half that speed?


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