3. A driver drives 1km north and then 2 km east on a horizontal field How far and in what
direction is she from the starting point?

The driver's distance is 2.24 km in the North-east direction from the starting point.

An illustrative diagram is attached below

In the diagram, S indicates the starting point and F is the final position.

The driver's distance from the starting point can be determined by calculating the length of /SF/

By Pythagoras' theorem,

From the given information

/PS/ = 1 km

and /FP/ = 2 km

Then,

/SF/ = 2.24 km

Hence. the driver's distance from the starting point is 2.24 km.

As shown in the diagram, she is in the North-east direction from the starting point.

Learn more on calculating distance here: link

Explanation:

Given that a driver drives 1 km north and 2 km east.

such that from the strating point, he travels towards north and then east such that the angle between them is 90 degrees.

Visualise the situation to a right anged triangle

and the line joining the starting point and the ending point will be the hypotenuse of the traingle.

By pythogoras theorm,

where a = 1 km and b = 2 km

The displacement from starting point, x = 2.236 km

The distance travelled by the driver = 2.236 km.

Direction of the displacement = atan ()

  =  26.56 degrees with repect to east measured anticlockwise.

attach the statements so i can answer : )

so easy. just google the electromagnetic waves and it’ll pop up.