physics
posted by Anonymous on .
an elastic ball rebounces 70% when it is dropped from the height. if it is dropped from 60m what is the total distance travelled by the ball

60+.7*60(2)+.7^2(60)*2+...
Sum from n=0 to large [2*60*.7^n) 60
sum 120*.7^n 60
geometric ratio,
= 120/(1.7)  60
= 120/.3 60
=40060=340