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#### karush

##### Well-known member

- Jan 31, 2012

- 3,084

View attachment 1341

for (i) just did \(\displaystyle 16^2+12^2=400\) so \(\displaystyle \sqrt{400} = 20\) km

but don't know how they got the \(\displaystyle 13 \frac{km}{min}\)

there are some more ? on this involving the displacement vectors but want to get this (a) part done first.

for (i) just did \(\displaystyle 16^2+12^2=400\) so \(\displaystyle \sqrt{400} = 20\) km

but don't know how they got the \(\displaystyle 13 \frac{km}{min}\)

there are some more ? on this involving the displacement vectors but want to get this (a) part done first.

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