A youngster having a mass of 50.0 kg steps off a 1.00 m high platform. If she keeps her legs fairly rigid and comes to rest in 1 0.0 ms, what is her momentum just as she hits the floor? What average force acts on her during the deceleration?
1 answer:
The average act on her during the deceleration is 4.47 meters per second.
<u>Explanation </u>:
<u>Given </u>:
youngster mass m = 50.0 kg
She steps off a 1.00 m high platform that is s = 1 meter
She comes to rest in the 10-meter second
<u>To Find </u>:
The average force and momentum
<u>Formulas</u> :
p = m * v
F * Δ t = Δ p
vf^2= vi^2+2as
<u>Solution </u>:
a = 9.8 m/s
vi = 0
vf^2= 0+2(9.8)(1)
vf^2 = 19.6
vf = 4.47 m/s .
Therefore the average force is 4.47 m/s.
You might be interested in
A polar molecules have charges that are free to move around
It's false i hope this helps :)
Good Morning, how are you?Your answer is C. The moon orbits and rotates the same, so we NEVER see the far side of the moon from earth :) Have a great day :)
Answer:
Explanation:
Since <em>light is so fast</em> we can assume no time passes between the lightning strikes and we observe it. We want to know then how far away did the strike occur for the sound to take 16s to reach our ears. Since the definition of velocity tells us that , we can write