With each bounce off the floor, a tennis ball loses 18% of its mechanical energy due to friction. When the ball is released from

Question

4 years ago

14

a height of 2.9 m above the floor, what height will it reach after the fourth bounce?
170 cm

130 mm

130 cm

13 cm

2 answers:

lora16 [44] · Answer 1 · 2021-12-26T22:22:42+03:00

8 0

Answer:

130 cm

Explanation:

After each bounce, the mechanical energy decreases by 18%, which means the maximum height decreases by 18%. Modeling this as exponential decay:

h = 290 (1 − 0.18)ⁿ

h = 290 (0.82)ⁿ

h = 290 (0.82)⁴

h = 130

The ball reaches a height of 130 cm.

olya-2409 [2.1K] · Answer 2 · 2021-12-26T23:56:47+03:00

6 0

Answer:

130 cm

Explanation:

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