Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system.
now here we can say that mechanical advantage is given as
here we know that
output force = 156 N
input force = 52 N
so we will have
so here mechanical advantage is 3
A compass has a magnitized needle that follows magnetic fields in the earth to lead you to the South I believe because of how strong the magnetic pull is.
As the car is moving it indicates that the kinetic energy is being represented. That's why I am pretty sure that this statement is correct! That's all you need to know to solve this. Regards!