you walk for 6.44 km with at a constant velocity of 2.60 m/s due west, turn around, and then walk with an average velocity of 0.465 m/s due east. from your starting point to your destination, your overall average velocity is 1.37 m/s due west. during the trip, how far east did you walk?



Answer :

The distance travelled due east during the trip is 875.831 meters.

The distance due west is 6.44 km (6440m) and the velocity due west is 2.6m/s. The velocity due east is 0.465m/s.

We know,

Average velocity = Total displacement/Total time

It is given that, the total average velocity is 0.465m/s.

If distance in west is W and the distance in east is E, then the displacement D is,

D = √((6440)²+(E)²)

The time T₁ in west,

T₁ = 6440/2.6 seconds

Time time T₂ in east,

T₂ = E/0.465

The total time T is,

T = T₁ + T₂

T = 6440/2.6 + E/0.465

So, putting all the values now,

Average velocity = D/T

1.37 = √((6440)²+(E)²)/(6440/2.6 + E/0.465)

On solving it further,

We get,

E = 875.831 meters.

So, the distance in east is 875.831 meters.

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