Chapter 2, Problem 10STP

To determine

To Choose: The correct option.

Answer to Problem 10STP

A correct answer is an option (A).

Explanation of Solution

Given:

Distance pushes by Australian plate is $s=$ 17 cm / year.

Formula used:

The average speed is

  $s=\frac{d}{t}$  ...... (1)

Here, $d$ and $t$ are distance and time taken to travel.

Calculation:

Rearrange the equation (1),

  $d=s\times t$  ...... (2)

Substitute 17 cm/year for $s$ and $1000\text{years}$ for $t$ in equation (2)

  $\begin{array}{l}d=\left(17\text{cm/year}\right)\times \left(1000\text{years}\right)\\ d=17000\text{cm}\end{array}$

Covert from centimeter to meter:

  $\begin{array}{l}d=17000\text{cm}\times \left(\frac{1\text{m}}{100\text{cm}}\right)\\ \boxed{d=170\text{m}}\end{array}$

Conclusion:

Hence,the displacement will be 170 m north.