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A ball is dropped from a height of 300 cm and bounced 270 cm, and then bounced by 243 cm, and so on. How high will the ball reach after the 7 bounce?

with complete solution plsss​

Sagot :

ALONE30GO

Answer: 143.49 cm

Explanation:

270/300 = 0.9

243/270 = 0.9

Each rebound is 90%

After 1st bounce, height = 0.9 x300

After 2nd bounce, height = 0.9^2 ×300

After nth bounce, height = 0.9^n x 300

Therefore, after 7th bounce, height = 0.9^7 x 300

= 143.49 cm

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