In which object more force has to be applied to move in between two object of mass 20 kg and other of mass 2 kg placed at rest at the same time? why?

the object of mass 20kg

Explanation:

because the force=massxacceleration

and there is a direct relation between force and mass so the more the mass of the object the greater force it will need to accelerate for example if you tried to push a bike it will be easier than trying to push a truck because of the difference between their masses as the objects of less masses require less forces to move

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west