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PHYSICAL SCIENCE FINAL EXAM STUDY GUIDE EXAM QUESTIONS AND VERIFIED CORRECT ANSWERS GRADED A+
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PHYSICAL SCIENCE FINAL EXAM STUDY GUIDE EXAM QUESTIONS AND VERIFIED CORRECT ANSWERS GRADED A+ motion the state in which one object's distance from another is changing reference point a place or an object used for comparison to determine if an object is in motion International System of Units...

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  • June 30, 2024
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  • 2023/2024
  • Exam (elaborations)
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  • physical science final exam study guide exam que

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PHYSICAL SCIENCE FINAL EXAM STUDY GUIDE EXAM
QUESTIONS AND VERIFIED CORRECT ANSWERS GRADED A+

motion
the state in which one object's distance from another is changing
reference point
a place or an object used for comparison to determine if an object is in motion
International System of Units
the system of units (SI) used by scientists to measure the properties of matter
meter
the basic SI unit of length
When is a object in motion?
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.
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.
5. An object is in motion when is distance from a(n) reference point is changing.
6. The prefix that means "one hundredth" is _____.
6. The prefix that means "one hundredth" is ceni.
7. A meter is a little longer than a _____
7. A meter is a little longer than a yard
8. The basic SI unit of the length is the ______
8. The basic unit unit of the length is the meter
speed
the distance an object travels per unit of time

,average speed
the overall rate of speed at which an object moves
instantaneous speed
The speed of an object at one instant of time.
velocity
speed in a given direction
slope
the steepness of a line on a graph
How do you know an object's speed and velocity?
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?
You can show the motion of an object on a line graph in which you plot distance versus
time.
speed formula
speed = distance/time
slope formula
slope = rise/run
What kind of motion does acceleration refer to?
increasing speed, decreasing speed, or changing direction
How is acceleration calculated?
caluculate the change in speed per unit of time
acceleration formula
acceleration= (final speed - initial speed)/ time
What graphs can be used to analyze the motion of an accelerating object?
speed-versus-time graph and a distance-versus-time graph
acceleration
the rate at which velocity changes
Speed=32m\8s
4m\s

, A car travels 66 kilometers in 3 hours. What is it speed?
66km\3h
Average Speed= 200km/5h=
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?
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?
5km/h
How is a force described?
by its strength and by the direction in which it acts
How are unbalanced and balanced forces related to an object's motion?
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
a puch or a pull
How is force measured?
newtons - 1 N amount of force of lifting a small lemon
net force
the combination of all forces acting on an object
calculate forces acting in opposite directions by
subtracting
Calculate forces acting in the same direction by
adding
balanced forces
no motion
unbalanced forces
motion

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