. If the sum of the vectors is zero, the two vectors have same magnitude and ………
directions.
11.Quantities that have only ………. are called scalars.
12. A ……… has both magnitude and direction.
13. The change in position along a certain direction is called ……… .
14. Force is a ……… quantity.
15. Mass is a …….. quantity.
16. The combined effect of two (or) more vectors is called …….. .
17. The vector sum of two vectors is called ……… vector.
18.The process of sub-dividing into two or more vectors is called ……… .
19. A vector can be represented by an ………. .
20. Vectors of ………. kinds may not be added.
21. Only vector quantities of ………. kind may be added.
22. If D ⃗ =-4C ⃗, the magnitude of D ⃗ is ………. than that of C ⃗.
23. If A ⃗, B ⃗ and C ⃗ satisfy the equation A ⃗+B ⃗-C ⃗=0, then C ⃗ is ……… vector of A ⃗and B ⃗.
24. The magnitude of the resultant force of a 12 N pointing east and a force of 5 N
19) The nuclear force is a ……. range force.
(20) The ratio of mass to volume is defined as ……… .
(21) The density of ice is ……….. than that of water.
(22) The symbol of density is ρ and it is a …….. quantity.
(23) The SI unit for pressure is …….. .
(24) The total momentum of an …….. system is constant.