Aball is dropped from a height of 1 metre. if it reaches 0.7 times the height of the height of the previous bounce at each bounce, work out how many times the ball bounces until the height is less than 1 centimetre

Hello,
Let's  n the number of the bounce



ln(0.7^n)+ln(100) <=ln(1)
==>n*ln(0.7) <=-ln(100)
==>n >=-ln(100)/ln(0.7)
==> n>=12,911392471625765979506986280561

The ball bounces 12 times until the height is less than 1 centimetre .

If you don't like my calculus see the file joined.

Idon’t know what the answer is i wish i could