Question

A 41-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 1.5 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
Answer:
___________m

Answer 1

The altitude of the pole vaulter as she crosses the bar is 5 m.

The altitude of the bar

v² = u² - 2gh

where;

• v is final velocity of the pole vaulter
• u is the initial velocity of the pole vaulter
• h is altitude of the bar

h = (u² - v²)/2g

h = (10² - 1.5²)/(2 x 9.8)

h = 5 m

Thus, the altitude of the pole vaulter as she crosses the bar is 5 m.

Learn more altitude here: brainly.com/question/1159693

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