Answer:
A contact force requires two objects to be touching, a field force works at a distance
Explanation:
- A contact force is a force that requires the two objects to be touching. An example of contact force is the frictional force: in fact, frictional force only occurs if the surfaces of the two objects involved touch each other, otherwise it is not present.
- A field force is a force that acts on a distance, i.e. the objects involved do not need to touch. Examples of field force are the gravitational force and the electric force: in fact, an object with mass experiences a force of gravity when it is near a planet, but this force is present also when the object is not touching the planet. Similarly, electric charges experience an electric force when they are close to other electri charges, even when they are separated by a certain distance r. For this non-contact forces, we use the concept of field to identify the region of space in which an object experiences that force.
Answer:
total distance is 11.3 miles
Explanation:
Given data:
distance to north = 1.2 miles
distance to south at 38 degree east of south = 6.1 miles
distance to east of north at angle 89 degree = 4 miles
distance to east of north at angle 31 degree = 6.5 miles
considering each displacement as vector so we have
total distance is