Posted by **tumcee** on Saturday, April 17, 2010 at 2:28pm.

A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A?

What is the magnitude?

What is the direction ° (counterclockwise from the +x-axis)?

- college physics -
**drwls**, Saturday, April 17, 2010 at 4:14pm
OK, I found the figure at

http://www.webassign.net/wb/3-30.gif

All you have to do is use a little trig and add up the vertical and horizontal displacements.

Four vectors are being added. In the +y direction, the change in position is

Y = 20 sin 30 + 30 - 20 sin 45

= 25.86 m

You do the +x displacement, which is

X = 20 cos30 -40 + 20 cos 45, which is a negative number.

Use the Pythagorean theorem for the magnitude of the displacement.

The direction angle is in the second quadrant and the tangent of the angle from the +X axis is Y/X

- college physics -
**Wow**, Monday, October 27, 2014 at 7:42pm
27m at 72 degrees

## Answer this Question

## Related Questions

- college physics - A person walks from point A to point B as shown in the figure ...
- physics - A person walks 10 m in the + direction, 32 m in the - direction. What ...
- College Physics - The point charges in Figure 17.41 are located at the corners ...
- Physics - Four point charges are at the corners of a square of side a as shown ...
- Math: Compass Bearings - two people start walking from the same point. Person A ...
- physics - Person A walks 6.0 m at an angle of 30 north of east. Person B walks 7...
- physics - Hi! could anyone help me to solve this problem please. Three point ...
- Physics - The helicopter view in the figure below shows two people pulling on a ...
- physics - A car initially traveling eastward turns north by traveling in a ...
- physics - a woman walks 2 km due east and then walks 4 km in the direction 30 ...

More Related Questions