Final answer:
No, objects do not need to physically touch each other to experience a collision, as long range forces like gravitational, electric, and magnetic forces can cause interactions at a distance. option b is correct
Step-by-step explanation:
option b is correct Is it necessary for colliding objects to physically touch each other during a collision? The answer is No, long range forces such as gravitational, electric, and magnetic forces can cause objects to affect each other without direct physical contact. There are two main categories of forces: contact forces and long-range forces. Contact forces, which include tension, friction, normal force, and the force of a spring, arise from interatomic electric forces when objects touch each other. Conversely, long-range forces such as gravitational force can exert influence at a distance, as with the Earth and the Moon, where no physical contact occurs yet gravitational interactions are evident.
No, long range forces such as gravitational, electric, and magnetic forces allow objects to scatter off each other without physically touching. These long-range forces do not require direct contact between the objects. For example, when two charged objects repel each other due to their electric charges or when two magnets repel each other without touching, these are examples of long-range forces at work.