Investigation 1: What Is Force?
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Force
A push or a pull
Energy
The ability to apply force over a distance
Friction
a force acting between surfaces in contact. Friction acts to resist motion
spring scale
an instrument used to measure force
kinetic energy
energy of movement
Newton
the standard unit for measuring force in the metric system
net force
the sum of all the forces acting on a mass
interaction
to act on and be acted upon by one or more objects
