Dear friend, again pliz solve this question.

16. Uniform motion: straight line

Non uniform motion: curved line

18: two factor: nature of the surface either smooth or rough and coefficient of friction of the surface.

19. Momentum is defined as product of mass and velocity. It is a vector quantity.

Formula= p=mv

Unit=kilogram meters per second (kg⋅m/s) or Newton.second

(N.s)

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

the answer is five curious-looking beans