DJ Science Test Prep 10/13/22 Flashcards
Types of forces
force, contact force, non contact force
push or pull of object
force
push or pull on one object by another that’s touching it
contact force
gravity which pulled something
non contact force
1 non-contact force
gravity
SI unit for force is
the newton
What has more force a tennis ball or a ping pong ball and why?
tennis ball because it’s larger
attractive force that exists between all objects that have mass
gravity
amount of matter in an object, everything has mass
mass
If something has more mass it has ______gravitational pull
more
This is the gravitational force that is exerted on an object
weights
Something that slows you down
friction
What causes friction between spaces?
microscopic dips and bumps
Combination of all forces acting on an object
net force
Newton’s first law
when an object is staying still, but another object bumps into it.
When same direction forces combine
combining forces
uncombined forces
opposite
forces acting upon an object that combine and form a net force of 0
Balanced forces
tendency of object to resist change in its motion
inertia
What is Newtons 2nd law?
F=ma
Force is measured in
Newtons
F =
ma
What is any motion?
circular motion
What is Newton’s 3rd Law?
When an object exerts a force on a second object, the second object exerts an equal force in the opposite direction of each object.
