Physical Science Final Exam Study Guide Questions with
Certified Solutions
motion - Answer the state in which one object's distance from another is changing
reference point - Answer a place or an object used for comparison to determine if an object is in motion
International System of Units - Answer the system of units (SI) used by scientists to measure the
properties of matter
meter - Answer the basic SI unit of length
When is a object in motion? - Answer if it changes position relative to a reference point
4. Scientists around the world use the ______________________ , a system of measurement based on
the number ten. - Answer 4. Scientists around the world use the international system of units a system
of measurement based on the number ten.
5. An object is in ______ when is distance from a(n) _____________ is changing. - Answer 5. An object is
in motion when is distance from a(n) reference point is changing.
6. The prefix that means "one hundredth" is _____. - Answer 6. The prefix that means "one hundredth"
is ceni.
7. A meter is a little longer than a _____ - Answer 7. A meter is a little longer than a yard
8. The basic SI unit of the length is the ______ - Answer 8. The basic unit unit of the length is the meter
speed - Answer the distance an object travels per unit of time
average speed - Answer the overall rate of speed at which an object moves
,instantaneous speed - Answer The speed of an object at one instant of time.
velocity - Answer speed in a given direction
slope - Answer the steepness of a line on a graph
How do you know an object's speed and velocity? - Answer If you know the distance an object travels in
a certain amount of time, you can calculate the speed of the object. When you know both the speed and
direction of an object's motion, you know the velocity of the object.
How can you graph motion? - Answer You can show the motion of an object on a line graph in which you
plot distance versus time.
speed formula - Answer speed = distance/time
slope formula - Answer slope = rise/run
What kind of motion does acceleration refer to? - Answer increasing speed, decreasing speed, or
changing direction
How is acceleration calculated? - Answer caluculate the change in speed per unit of time
acceleration formula - Answer acceleration= (final speed - initial speed)/ time
What graphs can be used to analyze the motion of an accelerating object? - Answer speed-versus-time
graph and a distance-versus-time graph
acceleration - Answer the rate at which velocity changes
, Speed=32m\8s - Answer 4m\s
A car travels 66 kilometers in 3 hours. What is it speed? - Answer 66km\3h
Average Speed= 200km/5h= - Answer 40km/h
Suppose a car travels 60 kilometers the first two hours and 15 kilometers the next hour. What is the
car's average speed? - Answer 25km/h
Suppose you ride your bicycle into the countryside on a bike path. You travel 6 kilometers the first hour,
3 kilometers the second, and 6 kilometers the third hour. What is your average speed for the whole
ride? - Answer 5km/h
How is a force described? - Answer by its strength and by the direction in which it acts
How are unbalanced and balanced forces related to an object's motion? - Answer Unbalanced forces
acting on an object result in a net force and cause a change in the object's motion. Balanced forces
acting on an object do not change the object's motion.
force - Answer a puch or a pull
How is force measured? - Answer newtons - 1 N amount of force of lifting a small lemon
net force - Answer the combination of all forces acting on an object
calculate forces acting in opposite directions by - Answer subtracting
Calculate forces acting in the same direction by - Answer adding
balanced forces - Answer no motion
Certified Solutions
motion - Answer the state in which one object's distance from another is changing
reference point - Answer a place or an object used for comparison to determine if an object is in motion
International System of Units - Answer the system of units (SI) used by scientists to measure the
properties of matter
meter - Answer the basic SI unit of length
When is a object in motion? - Answer if it changes position relative to a reference point
4. Scientists around the world use the ______________________ , a system of measurement based on
the number ten. - Answer 4. Scientists around the world use the international system of units a system
of measurement based on the number ten.
5. An object is in ______ when is distance from a(n) _____________ is changing. - Answer 5. An object is
in motion when is distance from a(n) reference point is changing.
6. The prefix that means "one hundredth" is _____. - Answer 6. The prefix that means "one hundredth"
is ceni.
7. A meter is a little longer than a _____ - Answer 7. A meter is a little longer than a yard
8. The basic SI unit of the length is the ______ - Answer 8. The basic unit unit of the length is the meter
speed - Answer the distance an object travels per unit of time
average speed - Answer the overall rate of speed at which an object moves
,instantaneous speed - Answer The speed of an object at one instant of time.
velocity - Answer speed in a given direction
slope - Answer the steepness of a line on a graph
How do you know an object's speed and velocity? - Answer If you know the distance an object travels in
a certain amount of time, you can calculate the speed of the object. When you know both the speed and
direction of an object's motion, you know the velocity of the object.
How can you graph motion? - Answer You can show the motion of an object on a line graph in which you
plot distance versus time.
speed formula - Answer speed = distance/time
slope formula - Answer slope = rise/run
What kind of motion does acceleration refer to? - Answer increasing speed, decreasing speed, or
changing direction
How is acceleration calculated? - Answer caluculate the change in speed per unit of time
acceleration formula - Answer acceleration= (final speed - initial speed)/ time
What graphs can be used to analyze the motion of an accelerating object? - Answer speed-versus-time
graph and a distance-versus-time graph
acceleration - Answer the rate at which velocity changes
, Speed=32m\8s - Answer 4m\s
A car travels 66 kilometers in 3 hours. What is it speed? - Answer 66km\3h
Average Speed= 200km/5h= - Answer 40km/h
Suppose a car travels 60 kilometers the first two hours and 15 kilometers the next hour. What is the
car's average speed? - Answer 25km/h
Suppose you ride your bicycle into the countryside on a bike path. You travel 6 kilometers the first hour,
3 kilometers the second, and 6 kilometers the third hour. What is your average speed for the whole
ride? - Answer 5km/h
How is a force described? - Answer by its strength and by the direction in which it acts
How are unbalanced and balanced forces related to an object's motion? - Answer Unbalanced forces
acting on an object result in a net force and cause a change in the object's motion. Balanced forces
acting on an object do not change the object's motion.
force - Answer a puch or a pull
How is force measured? - Answer newtons - 1 N amount of force of lifting a small lemon
net force - Answer the combination of all forces acting on an object
calculate forces acting in opposite directions by - Answer subtracting
Calculate forces acting in the same direction by - Answer adding
balanced forces - Answer no motion
