Answers

2016-03-16T23:08:44+08:00
There are four kinds of motion/distance problems

1. Distance Overtaking: d1 = d2
2. Distance Ahead: d2 - d1= distance away
3. Distance Apart: d1 + d2 = dT
4. Round Trip: d1 = d2

hope i helped :))
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2016-03-19T13:33:52+08:00
D=√ x_{2}- x_{1}+ y_{2}-y_{1}
d=√(5-(-3)²+(2-4)
d=√(8)²+(2)²
d=√64+4
d=√68
d=√(4)(7)
d=2√17
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