Agood scientific (blank) can be repeated by someone else and the same results will be found

A good scientific experiment can be repeated and the same results will be found. They can have the same theory, yes, but they might conduct the experiment a little differently than what the other person did.

I think it would be a theory because it's a experiment that can be repeated and get the same or similar results

Explanation:

Assuming a frictionless car on a horizontal surface.

Kinematics answer

v² = u² + 2as

a = (v² - u²) / 2s

a = (0² - 15.0²) / (2(50.0)) = -2.25 m/s²

F = ma

F = 1580(2.25)

F = 3555 N

Work-Energy theorem answer

The work of the force must equal the initial kinetic energy of the car.

F(50.0) = ½(1580)15.0²

F = 3555 N