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NiendorfPhysics

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## Homework Statement

Don't ruin the problem for me please, I just want to know why there is a velocity vector at the end of this formula. It's really strange since there is velocity in the equation already, so what would the velocity with the vector arrow on top mean?

Problem: A boat travels at constant velocity ⃗vo when the motor is on. At t = 0 the motor is turned off and the acceleration of the boat due to the resistive force of the water is ⃗a =−kv^(−1/2⃗)

**v**(with k > 0 a constant). a) Find ⃗a(t), ⃗v(t) and ⃗r(t). b) Find the time and the distance to stop.

PDF source (problem 4): http://web.physics.ucsb.edu/~physCS31/fall2014/hw3.pdf

## Homework Equations

a (with vector arrow) = −kv^(−1/2⃗)

**v**

## The Attempt at a Solution

I thought at first that it might be like the r-hat directional vector at the end of some equations, but now I'm not so sure

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