Hello, I need help on questions 9, 10 and 13. Any work would be appreciated thank you so much!

9. [-11 Points] SERPSE10 11.2.0P.010.MI. 0/6 Submissions Used MY NOTES The position vector of a particle of mass 2.20 kg as a function of time is given by F = (6.00 i + 5.80 ti), where i" is in meters and t is in seconds. Determine the angular momentum of the particle about the origin as a function of time, (:l Q) kg - mZ/e Need Help? 10. [-/3 Points] DETAILS SERPSE10 11.2.P.008. 0/6 Submissions Used A 1.10-kg particle moves in the xy plane with a velocity of V = (3.70 i - 3.70 j) m/s. Determine the angular momentum of the particle about the origin when its position vector is r = (1.50 i + 2.20 j) m. i+ 3 + k ) kg . m 2 / s Need Help? Read It Watch It13. [-/1 Points] DETAILS SERPSE10 11.4.OP.016. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 260 kg . m and is rotating at 8.0 rev/min about a frictionless vertical axle. Facing the axle, a 24.0-kg child hops onto the merry-go-round and manages to sit down on the edge. What is the new angular speed of the merry-go-round? rev/min Need Help? Read It Watch It