1. V^2 = Vo^2 + 2g*h
V^2 = 0 + 19.6*3 = 58.8
V = 7.67 m/s.
2.
1.what is the final velocity of a hoop that rolls with out slipping down a 3.00m high hill starting at rest?
2. a 1.80 m radius playground merry go round (disk = 1/2 m r^2) hass a mass of 120 kg and is rotating with an angular velocity of .600 rev/s. what is the angular velocity after a 28 kg kid gets on to it by grabbing the outer edge? the child is initially at rest
1 answer
2 answers