Test 12/16 Flashcards
how can mass influence gravity?
2/3
everything with mass has gravity. large mass means a strong force of gravity, while small mass is a weak force of gravity.
how does distance affect gravity?
3/3
the further away something is, the weaker the gravity will FEEL, while the closer an object is, the stronger gravity will FEEL
what is friction?
1/3
a force that opposes motion
what’s the cause of friction?
2/3
friction is caused when the “hills and valleys” catch and snag on each other when 2 surfaces are closely pressed together
where does the “pull” in friction actually come from? 3/3
.
name 3 ways on how we can increase friction?
Increase mass
Increase push or pull
Make the surface rougher
what is Newton’s first law of motion?
an object at rest will stay at rest, and object in motion will stay in motion at a constant speed unless acted upon by an unbalanced force
what’s Newton’s second law of motion?
The acceleration of an object depends on the mass of the object or the amount of force applied
what is Newton’s third law of motion?
Every force has an equal and opposite reaction force, the 2 forces are not acting on the same object
To put forth as strength or make a great effort at something
Exert
Quantity that has size/direction
Vector
Used when asking about how powerful something is, it’s size
Magnitude
Push or pull
Force
SI base unit for force
Newton
Overall force acting on an object when all of the forces are combined
Net force
