document.write( "Question 202764: VERY URGENT. Please help me. :)\r
\n" );
document.write( "\n" );
document.write( "Jodi drove her car 20.0 km due to north before making a right turn and going 100 km due to east at which point she made an undetermined displacement, she ended up 85.0 km away from her when she started at a direction of 41 degrees relative to the x-axis at her point of origin. What was the 3rd displacement? \n" );
document.write( "
Algebra.Com's Answer #152939 by scott8148(6628) You can put this solution on YOUR website! on a one kilometer x-y grid, the position after the 2nd displacement is (100,20)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "for an 85 km radius at an angle of 41º \n" ); document.write( "the x-displacement is 85 * cos(41º) or 64.2 km (approx) \n" ); document.write( "the y-displacement is 85 * sin(41º) or 55.8 km (approx)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the 3rd displacement is 35.8 km west and 35.8 km north or 50.6 km north-west \n" ); document.write( " |