Sorry, folks. I forgot to post the solutions to the last homework exercise. See attached file which also includes the questions.
Here are your solutions to the homework questions on scalar and vector quantities. Check your own work against these answers and let me know if you need any further explanation to reach the answers shown.
Here are my worked answers to HW4 on forces. Please speak to me if you still have questions and working through the attached file.
Note that other methods are possible for Q5a(ii), e.g. sine & cosine rules, or a scale drawing.
Sorry for the long wait! Here are worked solutions to the homework questions on calculus and special relativity. Come and see me if you want to go over any of them. Thanks.