PHYS 220 Exam 1 questions with correct
answers
Term |set |one: |model |of |a |process, |model |of |an |object, |physical |quantity, |physical |phenomenon
Term |set |two: |free |fall, |acceleration, |rolling |ball, |point |like |object
Match |the |terms |from |set |one |to |terms |from |set |two |- |VERIFIED |ANSWER✔✔-Model |of |a |process |- |
freefall
Model |of |an |object |- |point |like |objects
Physical |quantity |- |acceleration
Physical |phenomenon |- |rolling |ball
Which |group |of |quantities |below |consist |only |of |scaler |quantity |- |VERIFIED |ANSWER✔✔-Average |
speed, |path |length, |clock |reading
Which |of |the |following |are |examples |of |time |intervals
One |- |I |woke |up |at |7 |AM
Two |- |the |lesson |lasted |45 |minutes
Three |- |Kate |was |born |on |September |22
Four |- |and |astronaut |orbited |Earth |in |four |hours |- |VERIFIED |ANSWER✔✔-Two |and |four
A |student |said, |"the |displacement |between |my |dorm |in |the |lecture |hall |is |one |kilometer |"what |
should |have |said |instead |- |VERIFIED |ANSWER✔✔-Either |distance |or |path |length
In |object |moves |so |that |it's |position |depends |on |time |as |X |equals |12 |minus |4T |plus |T |squared. |Which |
statement |below |is |not |true? |- |VERIFIED |ANSWER✔✔-The |speed |of |the |object |is |always |decreasing
, If |a |car |is |moving |at |constant |velocity |what |would |the |velocity |versus |time |graph |looks |like |- |VERIFIED
|ANSWER✔✔-A |horizontal |line |at |that |velocity
When |are |average |and |instantaneous |velocities |the |same |- |VERIFIED |ANSWER✔✔-When |the |object |
moves |at |constant |velocity |and |when |the |object |does |not |move
You |dropped |a |small |ball, |and |then |a |second |bar |small |ball. |When |you |drop |the |second |ball, |the |
distance |between |them |is |3 |cm. |What |statement |below |is |correct? |- |VERIFIED |ANSWER✔✔-The |
distance |between |the |balls |increases
Your |cars |traveling |west |at |12 |m/s. |A |stoplight |to |the |west |of |you |turned |yellow |when |you're |20 |m |
from |the |edge |of |the |intersection. |You |apply |the |brakes |and |your |cars |speed |decreases |your |car |
stops |before |it |reaches |the |stoplight |what |are |the |signs |for |the |components |of |The |kinematics |
quantities. |v_0, |x_0 |and |a |- |VERIFIED |ANSWER✔✔-V_0 |is |negative
X_0 |is |positive
Acceleration |is |positive
A |sandbag |hangs |from |a |rope |attached |to |a |rising |hot |air |balloon. |The |rope |connecting |the |bag |to |the
|balloon |is |cut. |How |will |to |observers |see |the |motion |of |the |sandbag? |Observer |one |is |in |the |hot |air |
balloon |and |observer |two |is |on |the |ground |- |VERIFIED |ANSWER✔✔-FIND |ANSWER |(12)
An |apple |falls |from |a |tree |it |hits |the |grand |at |a |speed |of |5 |m/s |what |is |the |approximate |height |of |the
|tree |- |VERIFIED |ANSWER✔✔-1.2 |m. |
How?
Find |velocity=a*t |
5= |9.8t
t= |0.51
Use |h=.5at^2
H= |.5 |(9.8) |(.51^2) |= |1.2
answers
Term |set |one: |model |of |a |process, |model |of |an |object, |physical |quantity, |physical |phenomenon
Term |set |two: |free |fall, |acceleration, |rolling |ball, |point |like |object
Match |the |terms |from |set |one |to |terms |from |set |two |- |VERIFIED |ANSWER✔✔-Model |of |a |process |- |
freefall
Model |of |an |object |- |point |like |objects
Physical |quantity |- |acceleration
Physical |phenomenon |- |rolling |ball
Which |group |of |quantities |below |consist |only |of |scaler |quantity |- |VERIFIED |ANSWER✔✔-Average |
speed, |path |length, |clock |reading
Which |of |the |following |are |examples |of |time |intervals
One |- |I |woke |up |at |7 |AM
Two |- |the |lesson |lasted |45 |minutes
Three |- |Kate |was |born |on |September |22
Four |- |and |astronaut |orbited |Earth |in |four |hours |- |VERIFIED |ANSWER✔✔-Two |and |four
A |student |said, |"the |displacement |between |my |dorm |in |the |lecture |hall |is |one |kilometer |"what |
should |have |said |instead |- |VERIFIED |ANSWER✔✔-Either |distance |or |path |length
In |object |moves |so |that |it's |position |depends |on |time |as |X |equals |12 |minus |4T |plus |T |squared. |Which |
statement |below |is |not |true? |- |VERIFIED |ANSWER✔✔-The |speed |of |the |object |is |always |decreasing
, If |a |car |is |moving |at |constant |velocity |what |would |the |velocity |versus |time |graph |looks |like |- |VERIFIED
|ANSWER✔✔-A |horizontal |line |at |that |velocity
When |are |average |and |instantaneous |velocities |the |same |- |VERIFIED |ANSWER✔✔-When |the |object |
moves |at |constant |velocity |and |when |the |object |does |not |move
You |dropped |a |small |ball, |and |then |a |second |bar |small |ball. |When |you |drop |the |second |ball, |the |
distance |between |them |is |3 |cm. |What |statement |below |is |correct? |- |VERIFIED |ANSWER✔✔-The |
distance |between |the |balls |increases
Your |cars |traveling |west |at |12 |m/s. |A |stoplight |to |the |west |of |you |turned |yellow |when |you're |20 |m |
from |the |edge |of |the |intersection. |You |apply |the |brakes |and |your |cars |speed |decreases |your |car |
stops |before |it |reaches |the |stoplight |what |are |the |signs |for |the |components |of |The |kinematics |
quantities. |v_0, |x_0 |and |a |- |VERIFIED |ANSWER✔✔-V_0 |is |negative
X_0 |is |positive
Acceleration |is |positive
A |sandbag |hangs |from |a |rope |attached |to |a |rising |hot |air |balloon. |The |rope |connecting |the |bag |to |the
|balloon |is |cut. |How |will |to |observers |see |the |motion |of |the |sandbag? |Observer |one |is |in |the |hot |air |
balloon |and |observer |two |is |on |the |ground |- |VERIFIED |ANSWER✔✔-FIND |ANSWER |(12)
An |apple |falls |from |a |tree |it |hits |the |grand |at |a |speed |of |5 |m/s |what |is |the |approximate |height |of |the
|tree |- |VERIFIED |ANSWER✔✔-1.2 |m. |
How?
Find |velocity=a*t |
5= |9.8t
t= |0.51
Use |h=.5at^2
H= |.5 |(9.8) |(.51^2) |= |1.2
