Final: Forces Flashcards
which on the following is not a factor in calculating momentum?
acceleration
whenever an object is standing still, which value is always zero?
speed, momentum, and velocity (all the above)
a tug-of-war that results in one team pulling the other across the line is an example of..
unbalanced forces
a force is continuously applied to an object, causing it to accelerate. After a period of time, however, the object stops accelerating. What conclusion can be drawn?
the object experienced some kind of friction
weight is best described as
the downward force exerted on an object due to gravity
which is used to measure acceleration
m/s^2
the tendency of an object at rest to remain at rest is
inertia
the strongest gravitational force occurs between earth and
the moon
near earth’s surface, an object’s free fall acceleration increases as its
none of the above
according to Newton’s second law of motion, force is the product of ___ and ____
mass & acceleration
free fall is the motion of an object resulting from
Gravity
the value for the acceleration of objects in free fall near earth is
9.8 m/s^2
when gravitational forces and air resistance equalize on an object that is falling toward earth and the object stops accelerating, it’s velocity is called
terminal velocity
an object at rest remains at rest unless it experiences an
unbalanced force
if the car you are riding in comes to a sudden stop, _______ helps stop your forward motion
a seatbelt
