Sunday

September 21, 2014

September 21, 2014

Posted by **Nycw** on Wednesday, July 18, 2012 at 10:01pm.

(a) How far is Joe from his starting position?

(b) In what direction is Joe from his starting position?

- Trig/Physics -
**drwls**, Wednesday, July 18, 2012 at 11:14pmYou left out an important number that is needed to compute the answer. It should follow the first word "direction". How many degrees is the first direction North of East?

- Trig/Physics -
**Nycw**, Wednesday, July 18, 2012 at 11:38pmHi, sorry it was 30 degrees North of East.

- Trig/Physics -
**drwls**, Thursday, July 19, 2012 at 1:18amtotal displacement north

= 5 sin 30 + 10 cos20

= 2.5 + 9.397

= 11.897 miles

total displacement east

= 5 cos30 - 10 sin20

= 4.33 - 3.42

= 0.91 miles

(a) sqrt[(11.897)^2 + (0.91)^2]

= 11.93 miles

(b) direction = tan^-1 0.91/11.897

E of N

= 4.37 deg E of N

- Trig/Physics -
**Nycw**, Thursday, July 19, 2012 at 3:50amHi, thank you so much. Everything I tried hit all around the borders, but just was not working out correctly. I really appreciate your help.

**Answer this Question**

**Related Questions**

Math - A boat travels 74 miles on a course with direction 34 degrees and then ...

Physics - Margaret walks to the store using the following path: 0.435 miles west...

physics - Hi, can anyone help please. You are camping with two friends, Joe and ...

math - joe walked 4 miles north, 9 miles east then 8 miles north and 7 miles ...

physics - The accelerating force of the wind on a small 200-kg sailboat is 707 N...

physics (science) - John walks 1.0 km north, turns and walks 1.2 km at 50 ...

physics - A person walks 5 meters in the direction 370 degrees north of east. ...

Physics II - Margaret walks to the store using the path: 0.500 miles West, 0.200...

Physics - Vectors and Scalars Graph 1. determine the total distance traveled and...

Physics - Margaret walks to the store using the following path: 0.440 miles west...