TEST BANK For Inquiry into Physics 8th Edition by Ostdiek,
Verified Chapters 1 - 12, Complete Newest Version
Speed - ANSWER:Rate of movement
Is speed relative? - ANSWER:Yes
Formula for average speed - ANSWER:Average speed= total distance ------------------
total elapsed time
Instantaneous speed - ANSWER:Speed at a moment in time
Example of a device that gives instantaneous speed. - ANSWER:Speedometer
Conversion from meters per second to miles per hour - ANSWER:1 m/s = 2.24 mph
Formula for speed - ANSWER:V=
🔺d
-------
🔺t
How do average speed and instantaneous speed compare when the speed of an
object is constant? - ANSWER:They're the same
Formula for distance - ANSWER:d=vt
If time is doubled, what happens to distance? - ANSWER:It doubles because they are
directly proportional
Conversion from miles per hour to meters per second - ANSWER:1 mph = 0.447 m/s
What's the universes absolute speed limit?
What's its value? - ANSWER:Speed of light represented by C.
186,000 m/s
-------------- =
S
3x10^8 m/s^2
If the direction of a body's motion changes, what happens to speed? -
ANSWER:Speed doesn't change but velocity does.
What is velocity - ANSWER:Speed in a particular direction
If speed doesn't change, can velocity change? - ANSWER:Yes, it can change direction
, What are vectors - ANSWER:Have both numerical size and direction
Ex: ---> arrows
What are scalers? - ANSWER:Time, mass, volume
They don't have direction
What is acceleration - ANSWER:Rate of change of velocity divided by the time
elapsed
Formula for acceleration - ANSWER:a= 🔺v
-------
🔺t
Is acceleration a vector or scalar quantity? - ANSWER:Vector quantity, it has both
magnitude and direction
What is "falling freely"? - ANSWER:Is due only to force of gravity and no air
What is the value of a freely falling body, on earth? - ANSWER:9.8 m/s^2 = 1g
What is centripetal acceleration? - ANSWER:Center-seeking
Acceleration of an object moving circular
Formula for centripetal acceleration? - ANSWER:a= v^2
-------
r
How do centripetal acceleration and speed compare? - ANSWER:They're directly
proportional so they grow the same
How do centripetal acceleration and radius compare? - ANSWER:Indirectly
proportional
As the radious gets larger the acceleration gets smaller
What is meant by no motion - ANSWER:A body sitting in a fixed position in space
What is meant by uniform motion? - ANSWER:Constant velocity, constant speed, and
fixed direction
With uniform motion, what is the value of acceleration? - ANSWER:Zero
Velocity doesn't change
What is meant by constant acceleration? - ANSWER:Acceleration in a straight line
Objects velocity is changing in a fixed rate
What is the formula for velocity, when acceleration is constant - ANSWER:V=(a)(t)
Verified Chapters 1 - 12, Complete Newest Version
Speed - ANSWER:Rate of movement
Is speed relative? - ANSWER:Yes
Formula for average speed - ANSWER:Average speed= total distance ------------------
total elapsed time
Instantaneous speed - ANSWER:Speed at a moment in time
Example of a device that gives instantaneous speed. - ANSWER:Speedometer
Conversion from meters per second to miles per hour - ANSWER:1 m/s = 2.24 mph
Formula for speed - ANSWER:V=
🔺d
-------
🔺t
How do average speed and instantaneous speed compare when the speed of an
object is constant? - ANSWER:They're the same
Formula for distance - ANSWER:d=vt
If time is doubled, what happens to distance? - ANSWER:It doubles because they are
directly proportional
Conversion from miles per hour to meters per second - ANSWER:1 mph = 0.447 m/s
What's the universes absolute speed limit?
What's its value? - ANSWER:Speed of light represented by C.
186,000 m/s
-------------- =
S
3x10^8 m/s^2
If the direction of a body's motion changes, what happens to speed? -
ANSWER:Speed doesn't change but velocity does.
What is velocity - ANSWER:Speed in a particular direction
If speed doesn't change, can velocity change? - ANSWER:Yes, it can change direction
, What are vectors - ANSWER:Have both numerical size and direction
Ex: ---> arrows
What are scalers? - ANSWER:Time, mass, volume
They don't have direction
What is acceleration - ANSWER:Rate of change of velocity divided by the time
elapsed
Formula for acceleration - ANSWER:a= 🔺v
-------
🔺t
Is acceleration a vector or scalar quantity? - ANSWER:Vector quantity, it has both
magnitude and direction
What is "falling freely"? - ANSWER:Is due only to force of gravity and no air
What is the value of a freely falling body, on earth? - ANSWER:9.8 m/s^2 = 1g
What is centripetal acceleration? - ANSWER:Center-seeking
Acceleration of an object moving circular
Formula for centripetal acceleration? - ANSWER:a= v^2
-------
r
How do centripetal acceleration and speed compare? - ANSWER:They're directly
proportional so they grow the same
How do centripetal acceleration and radius compare? - ANSWER:Indirectly
proportional
As the radious gets larger the acceleration gets smaller
What is meant by no motion - ANSWER:A body sitting in a fixed position in space
What is meant by uniform motion? - ANSWER:Constant velocity, constant speed, and
fixed direction
With uniform motion, what is the value of acceleration? - ANSWER:Zero
Velocity doesn't change
What is meant by constant acceleration? - ANSWER:Acceleration in a straight line
Objects velocity is changing in a fixed rate
What is the formula for velocity, when acceleration is constant - ANSWER:V=(a)(t)
