A cat is moving at 18 m/s when it accelerates at 4 m/s2 for 2 seconds. What is his new velocity? (Show which kinematic equation you used, along with your
answer)

26m/s

Explanation:

Given parameters:

Initial velocity  = 18m/s

Time  = 2s

Acceleration  = 4m/s²

Unknown:

Final velocity

Solution:

To solve this problem, we use the expression below:

     Acceleration  =

v is the final velocity

u is the initial velocity

 t is the time taken

    4   =    

      v - 18  = 8

       v  = 8 + 18 = 26m/s

wavelength divides in half and speed stays the same.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.