Arotating merry-go-round makes one complete revolution in 4.0s a) what is the linear speed of a child seated 1.2 meters from the center? b) what is her acceleration (give components)

a) The linear speed of the rotating merry-go-round is 1.884 m/s.

b) The acceleration of the rotating merry-go-round  device is .

Explanation:

a) linear speed of the device:

Distance =

Child seated 1.2 meters from the center, which means that radius ,r = 1.2 meters

Time taken to complete one revolution = 4.0 seconds

The linear speed of the rotating merry-go-round is 1.884 m/s.

b) Acceleration

Linear velocity ,v = 1.884 m/s

The acceleration of the rotating merry-go-round  device is .

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

365.25 earth days are in the year of a light year