Question

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Answer 1

Answer:

(a)The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.

(b)Electrostatic Force

Explanation:

Answer 2

Answer:

b) After Sameer rubbed the comb on his dry hair,the comb gained charge and became a charged body due to which it was able to attract small pieces of paper.Such a force is called electrostatic force.Thus,the force applied by the comb on the pieces of paper is electrostatic force.