Write the equation that links extension, force and the spring constant.

That equation is called Hooke law, and it is:

F = -k•x

Where F represent the force, k is the spring constant, and x is the displacement (extension) of the spring

F = -k × x

Explanation:

As an equation, F = kx, where F is the force we apply, k is the spring constant, and x is the extension of the material (typically in meters).

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !