Science
a push or a pull that can cause an object to start moving, stop moving, or change direction
force
a force that opposes motion between two surfaces
friction
if you push two shopping carts one full and one empty with the same force which one would accelerate faster
the empty cart
cause no change in motion
balanced forces
the attraction between objects that have mass
gravity
what law describes a swimmer pushing water backward and moving forward
3rd
cause change in motion
unbalanced forces
a good graph has...
a title, x axis title, y axis title
when you apply more force to an object, what happens to its motion
it accelerates faster
newtons 1st law
objects resist changes in motion unless acted upon by an outside force
which law explains why a soccer ball stays still until someone kicks it
1st
describe how balanced and unbalances forces affect the motion of an object
balanced cause no change in motion while unbalanced cause a change in motion
newtons 2nd law
the greater the force, the greater the acceleration; the greater the mass, the less acceleration when the same force is applied
newtons 3rd law
for every action, there is an equal and opposite reaction.
the strength of motion; depends on an objects mass and speed
momentum