chapter 14
what is equivilent to one newton?
1 kgm/s^2
what is the mass of gravity
9.8 m/s^2
what has more inertia? a. a shopping cart full of groceries b. an empty shopping cart c. they have the same amount of inertia
A.
what is the mathematical formula that summarizes newton's 2nd law
a=f/m
newton's 2nd law describes the relationship between force, mass, and
acceleration
in an isolated system momentum is a
conserved quantity
in newton's 2nd law, the relationship between force and acceleration is a ________ relationship
direct
true or false: action/reaction forces cancel like unbalanced forces
false
another definition of mass is a measure of an object's
inertia
newton's first law is also called the law of
inertia
objects with more mass have more
inertia
the tendency of an object to resist a change in its state of rest or motion is called
inertia
in newton's 2nd law, the relationship between mass and acceleration is a _________ relationship
inverse
what are the units of mass
kg
what are the units of momentum (p)
kgm/s
____________ says that objects continue in their state of rest, or the motion they already have unless they are acted on by an unbalanced force
law of inertia
what are the units of velocity
m/s
what are the units of acceleration
m/s^2
_______ is a property that makes a moving object hard to stop
momentum
what are the units of force
newton
what is the unit of weight
newton
when a bug traveling west collides with the windshield of a car traveling east, what can be said about the collision?
the bug and the car feel the same force
if the net force acting on an object is not zero, then the forces acting on the object are said to be
unbalanced