Newwton's law of inertia states that an object will not be able to move unless force is applied to it
As the surface given is a smooth surface, we can use specular reflection. According to the law of specular reflection, the angle of incidence equals the angle of reflection, so it will also be 40°. Answer is A.
Answer:ME=E TOTAL - E THERMAL
Explanation:JUST DID IT ON APEX
