- #1
Tiplerfan
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In 2.0 min., a duck travels 22m [36deg N of E] then paddles 65m [E 25deg S] determine
i) total distance, ii) average speed, iii)tatol displacement iv) average velocity.
Relevant equations: v%=d/t (for velocity and speed)
i) total distance 22m+65m=87m
ii) v%=87m/120s
v = 0.725m/s
iii) let N&E be positive NS comp. 22sin36deg=12.93, 65sin25deg= -27.47, 12.93-27.47= -14.54or 14.54
EW comp. 22cos36deg=17.79, 65cos25deg=58.91, 17.79+58.91= 76.7[E]
d^2=14.54m^2+58.91m^2
d=78m
iv) v=78m/120s
v=0.65m/s [E 79.3deg S]
Thanks for any help
Cheers!
i) total distance, ii) average speed, iii)tatol displacement iv) average velocity.
Relevant equations: v%=d/t (for velocity and speed)
i) total distance 22m+65m=87m
ii) v%=87m/120s
v = 0.725m/s
iii) let N&E be positive NS comp. 22sin36deg=12.93, 65sin25deg= -27.47, 12.93-27.47= -14.54or 14.54
EW comp. 22cos36deg=17.79, 65cos25deg=58.91, 17.79+58.91= 76.7[E]
d^2=14.54m^2+58.91m^2
d=78m
iv) v=78m/120s
v=0.65m/s [E 79.3deg S]
Thanks for any help
Cheers!