A playground merry-go-round has a mass of 120 kg and a radius of 1.80 m and it is rotating with an angular velocity of 0.600 rev/s. What is its angular velocity (in rev/s) after a 25.0 kg child gets onto it by grabbing its outer edge

The final velocity

Explanation:

Given data

Mass of merry go round = 120 kg

Radius = 1.8 m

Initial angular velocity = 0.6

Mass of boy = 25 kg

We know that the final velocity is given by

Put all the values in above formula we get

This is the final velocity.

33: i think it’s b

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.