Well, west and north are right angles. After 2 hours, you say it's 50 kms apart so that's displacement ( hypothenuse) the speed towards west is 5kmph more so for 2 hours it will be 10kms, Pythagorean triplets (3,4,5) at 10 factors so (30,40,50) 30/2 along y and 40/2 along -x axis.
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Well, west and north are right angles. After 2 hours, you say it's 50 kms apart so that's displacement ( hypothenuse) the speed towards west is 5kmph more so for 2 hours it will be 10kms, Pythagorean triplets (3,4,5) at 10 factors so (30,40,50) 30/2 along y and 40/2 along -x axis.
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