☰ Contents · Geometry

The scalar product. Physical meaning of vectors

Lessons 47–48 · 2 lessons · A. A. Rahimqoriyev, M. A. To‘xtaxo‘jayeva. Geometry, Grade 8 (textbook for general secondary schools), revised 3rd edition. Yangiyo‘l Poligraf Servis, Tashkent, 2014
Answers are for parents and teachers.
1
What is the scalar product →a(5; 2) · →b(3; 6)?
2
What is the modulus of →a(20; 21)?
3
Perpendicular forces of 20 N and 15 N have a resultant of how many N?
4
A(1; 1), B(7; 9). What is |→AB|?
5
Give two examples each of a scalar quantity and a vector quantity.