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qwelly [4]
3 years ago
12

7. A 50 kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is over the bar is 1.0 m/s. Neglect air resist

ance, as well as any energy absorbed by the pole, and determine her height as she crosses the bar.
Physics
2 answers:
Marina86 [1]3 years ago
5 0

Answer:

5.1 m

Explanation:

Initial kinetic energy = final kinetic energy + final potential energy

KE = KE + PE

½ mv² = ½ mv² + mgh

½ v² = ½ v² + gh

½ (10 m/s)² = ½ (1.0 m/s)² + (9.8 m/s²) h

h = 5.1 m

luda_lava [24]3 years ago
4 0

Answer:  5.05 m

Explanation:

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