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## Homework Statement

16. ) A row boat, starting from rest takes 11 seconds to travel 34 meters. If the boat maintains a uniform acceleration, what will be its instantaneous velocity at the end of the 11-second period??

17.) At the point in the stream where the boat is crossing, the stream is 202 meters wide. If the boat in Question 16 maintains its final velocity for the remainder of the trip, how much time will it need to reach the opposite Shore?

18.) What acceleration did the row boat initially experience in Question 16??

So this is a Question of my Teacher

Wherein i want to prove that I made the right answer. Can you please solve this ?? Because I am having difficulty in proving something without concrete evidence from other Physics geeks.... I know this is a really easy problem but I need a more concrete proof. I have already done this but I am trying to make sure. My Teacher tried doing the constant velocity where in the equation is v=d/t

## Homework Equations

d= vit + at^2/2

d= vt

## The Attempt at a Solution

no.18)

d=vit+at^2/2

so since vi = 0 so i can remove vit

d=at^2/2

a=2d/t^2

a=2(34)/11^2

a= 68/121

a= 0.56m/s^2

no 16)

vf = vit + at

wherein vi = 0 so i can remove the vit in the equation

vf= at

vf= (0.56)(11)

vf= 6.16m/s or if i use the not rounded off part of .56m/s^2 6.18m/s

no 17)

d= 168

v= 6.16m/s

since the part wanted was the distance from the boat to the other shore which will be 202-34= 168

t=d/v

t= 168m/6.16m/s

t= 27.27s

or

t=168m/6.18/s

t= 27.18s

my Attempt

no. 16 . ) 6.16m/s

no. 17 . ) 27.27secs

no. 18 . ) a= .56m/s^2

My teacher's attempt

no. 16 . ) 3.09m/s

no. 17 . ) 56.38secs

no. 18 . ) 0.02m/s^2

I know my teacher is wrong already just looking at the Acceleration. I understand her because of the stress being put upon her though

I know the Significant Figures is wrong the reason for that is because my teacher wanted to have a 2 decimal at the end. I tried to argue with her but she's the teacher and she's a stubborn one.

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