The momentum of a 2 kg block moving at 3 m/s to the right is

6kgm/s

Explanation:

Given parameters:

Mass of block = 2kg

Velocity  = 3m/s  

Unknown:

Momentum = ?

Solution:

Momentum is the amount of velocity a body possess. It is a vector quantity.

 Momentum  = mass x velocity  

Now insert the parameters and solve;

  Momentum  = 2 x 3  = 6kgm/s

its a 5.5 n

glad that

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray