This week is really about practicing dynamics so we have very little notes to add.
Look carefully at all the examples in chap 6 except example 6.11 which is slightly beyond what we will cover.
Here is a problem solving video that reviews dynamics and kinematics.
Question. Henry whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the first 3 s after the elevator starts moving, then 930 N for the next 3 s. What is the elevator's velocity 6 s after starting?
Here is the worksheet for this problem solving video
As an additional problem, try this.