Fundamentals of force
what is a force
something with a push or a pull
what is the force that is always pushing down on you
gravity
what is Newtons first law of motion
objects in motion stay in motion and objects at rest stay at rest unless acted on by an opposite force
If you drop something what will happen
it will fall
what are the laws called that Isaac Newton discovered
THe universal laws of motion
What is the unit used to measure forces
newtons
what force is caused from 2 objects rubbing together
friction
what is Newton's second law of motion
the acceleration of an object depends on the force and mass of the object (f=ma)
if man #1 is pulling a rope with 100 newtons right and man #2 is pulling with 200 newtons left which way will they go and with how many newtons
100n left
what law did Galileo Gallilei come up with
the law of falling bodies
if an object stays still the forces acting on it are
equal
what is normal force
the forces when an object is stationary
what is Newton's third law of motion
every reaction has an equal and opposite reaction
why does a ball bounce
the ground puts out more force than gravity
was the apple story true
no
if an object moves the forces acting on it are
unbalanced
what is the final force after adding and subtracting called
net force
what number do forces appear in
2s / pairs
why doesn't a pall bounce forever (2 reasons)
air resistance and because energy is released through heat when it bounces
what does a scalar quantity have
magnitude
what 2 forces are acting on you right now
gravity and the floor
forces going in opposite directions should be (1 word)
sbtracted
a rocket going up would be an example of which law
3rd
if in space you throw something with an equal mass what will happen
you will move back at the same speed
what does a vector quantity have