Saturday

December 20, 2014

December 20, 2014

Posted by **Autumn** on Monday, September 7, 2009 at 8:46pm.

Please help!!!!!!

P.S. please don't round your numbers till the final answer, so there are no rounding errors, and please round the final number to 4 significant figures.

Do you need the degrees to solve this problem?? Alos please, if you are so kind explain step by step as to how to solve this problem.

thank you

- Physics -
**MathMate**, Tuesday, September 8, 2009 at 8:40amThe best way to solve this type of problems is by a table of component vectors.

Let x- and y-axes represent east and north respectively.

Resolve each segment of the trip into the x- and y-components.

Add up vectorially the components, which is the resultant displacement.

If the displacement is (x,y), the magnitude is √(x²+y²).

Work in hours, i.e. minutes should be divide by 60.

Distance x-component y-component

59.78 59.78*cos(0) 59.78*sin(0)

89.67 89.67*cos(90) 89.67*sin(90)

29.89 29.89*cos(270-59.78) 29.89*sin(270-59.78)

--------------------------------------

sum x y

Find (x,y), and the magnitude of displacment is √(x²+y²)

Divide the magnitude of displacement by the time (in hours) will give you the average velocity in miles per hour.

Post your answer for verification if necessary.

- Physics -
**Autumn**, Tuesday, September 8, 2009 at 9:59pmi got 16.46 mi/hr. is that right??

**Answer this Question**

**Related Questions**

Physics - a car travels 59.78 miles east in 89.67 minutes, then 89.67 miles ...

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

Story Problem - Ann drove 8 miles east, 4 miles south, 3 miles east, 6 miles ...

algebra - A car travels at a constant rate of 45 mph on a highway iffinitely (...

Physics - A car travels 15 miles east in 34 minutes. what is the velocity in ...

physics - A man walks 3 miles east in 1 hour at a constant velocity, then walks ...

Math - A car traveled 281 miles in 4 hours 41 minutes. What was the average ...

physics - a train moving at a constant speed of 100km/h travels east for 40 ...

physics - A girl goes 4 avenues east{.8 miles), then 24 streets south(1.2 miles...

math - Louise travels 10 miles in 15 minutes and alice drives 23 miles in 30 ...