A 45-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 1.1 m/s. Neglect air resistan
ce, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
_______m
1 answer:
The altitude or height of the pole vaulter as she crosses the bar is 4.04 m.
<h3>What is the height of the pole vaulter?</h3>
The height of the pole vaulter is determined from the change in kinetic energy which is equal to the potential energy at that height.
- Potential energy = Change in kinetic energy
h = (v - u)²/2g
h = (10 - 1.1)²/2 * 9.8
h = 4.04 m.
In conclusion, the height is determined from the potential energy at that height.
Learn more about potential energy at: brainly.com/question/14427111
#SPJ1
You might be interested in
Answer:
1080 meters
Explanation:
60sec in 1 minute
So, 3x60=180
- 6m/s (one second is 6 meters)
So, 6x180=1080 meters
I’m done with my homework e ee was a good night I got to go to
Observation– the process of using the five senses to gather information
Answer:
<h2>10,000 kg</h2>
Explanation:
The mass of the train can be found by using the formula
k is the kinetic energy
v is the velocity
From the question we have
We have the final answer as
<h3>10,000 kg</h3>
Hope this helps you
This
is
true
Electromagnetic waves travel fastest through vacuum
