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

Question

3 years ago

12

ance, as well as any energy absorbed by the pole, and determine her height as she crosses the bar.

2 answers:

Marina86 [1] · Answer 1 · 2022-04-21T07:01:44+03:00

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] · Answer 2 · 2022-04-21T04:36:19+03:00

4 0

Answer: 5.05 m

Explanation: