Dear Madam, I am writing to request more information about the tour guide training courses advertised by SGV Vocational School. I am over 18 years old and very interested in traveling and learning about different cultures, so I believe this course would be suitable for me. Could you please provide details about the course duration and timetable? I would also like to know the total cost of the course and whether there are any additional fees. Furthermore, I am interested in the apprenticeship mentioned in the advertisement. Could you explain how long the apprenticeship lasts and where trainees are usually placed? Finally, I would appreciate it if you could inform me about the application process and the starting dates of upcoming courses. I look forward to receiving your reply. Yours faithfully, Nguyễn Minh Tâm

a)Áp dụng btdl

v1.m1+v2.m2=(m1+m2).v

4.0,5+x.0,3=0,8.3

=>v2=1,33

b)vì sau va chạm cd vuông góc với v1

Nên v1^2+v^2=v2^2

=>16+9=v2^2

=>v2=5(m/s)

a)Áp dụng btdl

v1.m1+v2.m2=(m1+m2).v

4.0,5+x.0,3=0,8.3

=>v2=1,33

b)vì sau va chạm cd vuông góc với v1

Nên v1^2+v^2=v2^2

=>16+9=v2^2

=>v2=5(m/s)