Answer
given,
radius of merry - go - round = 4 m
mass of the disk = 120 kg
speed of the merry- go-round = 0 rad/s
speed = 2 m/s
mass of student = 60 kg
initial angular momentum of the system
final angular momentum of the system
from conservation of angular momentum
now,
change in kinetic energy of the system
initially the merry-go-round was on rest KE_i = 0
![\Delta KE =120 + 480 \times \dfrac{4}{16}](https://tex.z-dn.net/?f=%5CDelta%20KE%20%3D120%20%2B%20480%20%5Ctimes%20%5Cdfrac%7B4%7D%7B16%7D)
![\Delta KE = 240\ J](https://tex.z-dn.net/?f=%5CDelta%20KE%20%3D%20240%5C%20J)
Answer:
Its C
<u>Thank</u><u> </u><u>me</u><u> </u><u>later</u><u> </u>
<u>Now</u><u> </u><u>bye</u><u> </u>
Answer:
The thing that moves through water and forms a wave is. Energy.
The collision between two objects is an example of a contact force