Formulas
Force=mass∗acceleration
What is a push or pull on a object
Force
What is the unit of measurement for Force?
Newtons
_____ is the amount of matter in an object
Mass
What is newtons first law of motion
first law
What is the formula for momentum?
P (kg x m/s)= m (kg) x v (m/s)
What is the definition of contact force?
is a push or a pull on an object by another object
that is touching it.
________ is friction between a surface and a fluid, such as air
or water.
Fluid friction
what is the acceleration by gravity?
9.81 m/s2
What is Newtons Second law of motion
Second law
What is Net force?
The Net force is the combination of all the forces acting on a object
Forces have____________ and ______________
Magnitude and Direction
When an object is sliding, the force of sliding friction does not
_______; for this reason, increasing the applied force makes
a sliding object move______.
change, faster.
When the mass of one or both objects increases, the gravitational force between the objects __________
Increase
Third Law
third law
What is the formula for friction?
Friction = Friction coefficient * normal force
One reason for friction between surfaces is the _______, or the
dips and bumps on one surface that catch on those of the other surface.
roughness
What does balanced and unbalanced forces mean?
Balance is net force = 0,
Unbalanced is net force=/ 0
What is my weight if my mass is 73240 g
718.4844 kg*m/s2
What is wrong with this sentence?
The rule of inertia states that if the net force on an object is zero, then an object at rest will remain at rest and an object in motion will continue moving in a straight line with constant speed.
Newton’s first law of motion
Is the formula for Weight and the formula for Force the same?
Yes!
_______ decrease friction by causing a slight separation between
solid surfaces, so they don’t contact each other.
Lubrication
What is wrong in this sentence?
If you are moving a desk with a friend, you might use a forward direction as your net force.
Reference direction
Near Earth’s surface, an object’s weight is the gravitational force exerted on the object by
The planet
What is wrong with the next sentence?
In a car accident, seat belts help restrict the reference direction of the passengers
Its inertia