document.write( "Question 737411: A lemming runs from a point A to a cliff at 4m/s,jumps over the edge at B and falls at C at an average speed of 25 m/s,if the total distance from A to C is 500 metres and the time taken for the journey is 41 seconds,find the height Bc of the cliff. \n" ); document.write( "
Algebra.Com's Answer #450378 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A lemming runs from a point A to a cliff at 4m/s,jumps over the edge at B and falls at C at an average speed of 25 m/s, \n" ); document.write( "if the total distance from A to C is 500 metres and the time taken for the journey is 41 seconds, find the height Bc of the cliff. \n" ); document.write( ": \n" ); document.write( "let c = height of the cliff \n" ); document.write( "total A to C distance given as 500m \n" ); document.write( "(500-c) = distance from A to B \n" ); document.write( ": \n" ); document.write( "Write a time equation; time = dist/speed \n" ); document.write( ": \n" ); document.write( "Run time + fall time = 41 sec \n" ); document.write( " \n" ); document.write( "multiply by 100, clears the denominators, \n" ); document.write( "25(500-c) + 4c = 4100 \n" ); document.write( "12500 - 25c + 4c = 4100 \n" ); document.write( "-25c + 4c = 4100 - 12500 \n" ); document.write( "-21c = -8400 \n" ); document.write( "c = -8400/-21 \n" ); document.write( "c = 400 meter clif \n" ); document.write( " |