- #1

EaGlE

- 20

- 0

what does "relative to the water" mean?

1.) How much time does it take the walker to make the round trip?

answer must be in mins

2.) How much time does it take the rower to make the round trip? answer must be in mins

my work:

Given:

x=1500m

v(b) = 4.00 km/h

v(w) = 4.00 km/h

v(r) = 2.80

t1 = (1500)/(4+2.80) = 220.588secs <--- downstream time

t2 = (1500)/(4-2.80) = 1250 secs <--- upstream time

t(t) = 1470.588s <--- total time

how would i solve #1 ?

im thinking that i would need the distance formula

x(t) = x(0) + v(0)t + 1/2at^2

2(1500) = 0 + 2.80t + 0 (x(0) = 0, because at t=0, x=0. and a=0 because of constant speed)

3600= 2.80t... nevermind, it doesn't look right, can someone help?