physical science
the support force on a 10-N book that rests on a horizontal surface is
10N
when you step off a moving bus moving 2m/s, your horizontal speed when you meet ground is
2 m/s
A falling object that has reached its terminal speed continues to gain
Neither acceleration or speed
A dropped ball gains speed because
a gravitational force acts on it
which of the following has the largest momentum relative to earth
a pickup truck speeding along a highway
If gravity between the Sun and Earth suddenly vanished, Earth would continue moving in
a straight-line path
in science a theory is
a synthesis of a large body of well-tested knowledge
Technology is mainly
a tool of science
newton's second law focuses on
acceleration
An outcome of universal gravitation is that
all of the above
Which has zero acceleration?
all of the above
which has the greatest mass
automobile battery
The two measurements necessary for calculating average speed are
distance/time
When a crate slides down an incline at a constant velocity it is
dynamic equilibrium
the unit kilowatt hour is a unit of
energy
Success in science is mainly linked to emphasis on
experiments
the scientific method is most effective in
gaining, organizing, and applying new knowledge
according to Newton, the greater the masses of interacting objects, the
greater the gravitational force between them
Science is a body of knowledge that goes back to
humankind's beginnings
When dishes remain on a table when you yank the tablecloth beneath them, you're demonstrating
inertia
if you carry a heavy bag of groceries and bang your hand against the wall,the concept that best explains why your hand hurts is
inertia
A glance at the speedometer on your vehicle will tell you your
instantaneous speed
When a ball increases in speed by the same amount each second, its acceleration
is constant
A kilogram is a measure of an object's
mass
Between mass and weight, the more fundamental quantity is
mass
the language of science is
mathematics
in science, facts
may change
Inertia is defined as a
property of matter
As a bowling ball that rolls off the edge of a table falls, its horizontal component of motion
remains constant
Newton discovered
that gravity is universal
The net force on an object is
the combination of all forces acting on it
Your weight is
the gravitational attraction between you and the earth
Science is concerned mainly with the
the natural world
the conservation of momentum is most closely related to newtons
third law
A ball rolling down an incline has its maximum potential energy at
top
acceleration and velocity are
very different from each other
the quantity that most relates to the size of an object is
volume
Inside a freely-falling runaway elevator, your
weight is zero
your weight is defined to be the force
you exert against a supporting surface
the force required to maintain an object at a constant velocity in free space is equal to
zero