Page 89 - York Global Science 6 - Physical Science
P. 89
Physical Science
Let’s Learn
You cannot see forces, but you can see the effect of different forces on
objects.
Forces act in different ways and can be put into two groups: contact forces
and non-contact forces.
Contact forces are forces that happen when two objects touch – there is
contact between them. Most forces are contact forces.
Non-contact forces are forces where an object does not need to touch
another object for the force to act. The force coming from an object can act
from a distance.
Objects that exert a non-contact force have a field of influence around
them. This means that the force will only affect another object if that object
is inside the field of influence.
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