Chapter 1.7, Problem 26P

(A)

Interpretation Introduction

Interpretation:

The horse’s average velocity is to be determined in meters per second and miles per hour.

Concept Introduction:

The average velocity of horse’s in meters per second.

$v=\frac{d}{t}$

Here, distance is d and time is t.

(B)

Interpretation Introduction

Interpretation:

To determine the length of the fishing line in meters.

Concept Introduction:

One fathom is equal to 6 feet.

(C)

Interpretation Introduction

Interpretation:

To determine the work required in Joules.

Concept Introduction:

The work is equal to the multiplication of force and distance.

$\begin{array}{c}W=F\times d\\ =M\times a\times d\end{array}$

Here, mass is M, force is F, and distance is d.