Answer:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion is called kinematics.
this process is called parellelogram method of resolving vectors.
I think it would be that they have long wavelengths
So we want to know how can we detect infrared rays without an instrument. Infrared rays or heat, are a part of electromagnetic spectrum. We have specialized nerve cells in our skin called thermoreceptors that can detect differences in temperature that are produced by infrared part of EM spectrum.
