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
=400-60=340
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
1 answer
1 answer