Motion
motion
motion
forces
forces
100
Speed measurements are given in units of
What is distance/time
100
it can be important to know the velocity of an object, not just its speed, because
velocity also tells direction
100
you can calculate an average __________ if you know both the total distance and teh total time of a trip
What is speed
100
friction acts in a direction ________ to the direction of an object's motion
What is opposite
100
the amount of matter in an object is called its
What is mass
200
measurements of acceleration are given in units of
What is distance/time ^2
200
an object is in motion if it is moving relative to a
What is reference point
200
an object is in motion only if its distance from a reference point is
What is changing
200
unless an object at rest is acted upon by a force, it stays at rest due to its
What is inertia
200
the unit of force, Newton, is equal to
What is kg x m/s^2
300
an airplane that moves 50 meters in one second has a speed of
What is 50m/s
300
the velocity of an object gives both its speed and
What is direction
300
if you know the _________ of an object, you also know the direction of movement
What is velocity
300
a(n) __________ can cause an object's motion to change.
What is unbalanced force
300
the force of __________ acts between all objects in the universe
What is gravity
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