AP Physics Unit 2 Test Questions With
Correct Answers
A |person |standing |on |a |horizontal |floor |feels |two |forces: |the |downward |pull |of |gravity |and |the
|upward |supporting |force |from |the |floor. |These |two |forces |- |CORRECT |ANSWER✔✔-have |equal
|magnitudes |but |do |not |form |an |action/reaction |pair
A |person |who |weighs |800 |N |steps |onto |a |scale |that |is |on |the |floor |of |an |elevator |car. |If |the |
elevator |accelerates |upward |at |a |rate |of |5 |m/s2, |what |will |the |scale |read? |- |CORRECT |
ANSWER✔✔-1200 |N
A |frictionless |inclined |plane |of |length |20 |m |has |a |maximum |vertical |height |of |5 |m. |If |an |object
|of |mass |2 |kg |is |placed |on |the |plane, |which |of |the |following |best |approximates |the |net |force |it
|feels? |- |CORRECT |ANSWER✔✔-5 |N
A |20 |N |block |is |being |pushed |across |a |horizontal |table |by |an |18 |N |force. |If |the |coefficient |of |
kinetic |friction |between |the |block |and |the |table |is |0.4, |find |the |acceleration |of |the |block. |- |
CORRECT |ANSWER✔✔-5 |m/s2
The |coefficient |of |static |friction |between |a |box |and |a |ramp |is |0.5. |The |ramp's |incline |angle |is |
30°. |If |the |box |is |placed |at |rest |on |the |ramp, |the |box |will |- |CORRECT |ANSWER✔✔-accelerate |
down |the |ramp
Assuming |a |frictionless, |massless |pulley, |determine |the |acceleration |of |the |blocks |once |they |
are |released |from |rest. |- |CORRECT |ANSWER✔✔-(M-m/M+m)g
If |all |of |the |forces |acting |on |an |object |balance |so |that |the |net |force |is |zero, |then |- |CORRECT |
ANSWER✔✔-None |of |these. |
Correct Answers
A |person |standing |on |a |horizontal |floor |feels |two |forces: |the |downward |pull |of |gravity |and |the
|upward |supporting |force |from |the |floor. |These |two |forces |- |CORRECT |ANSWER✔✔-have |equal
|magnitudes |but |do |not |form |an |action/reaction |pair
A |person |who |weighs |800 |N |steps |onto |a |scale |that |is |on |the |floor |of |an |elevator |car. |If |the |
elevator |accelerates |upward |at |a |rate |of |5 |m/s2, |what |will |the |scale |read? |- |CORRECT |
ANSWER✔✔-1200 |N
A |frictionless |inclined |plane |of |length |20 |m |has |a |maximum |vertical |height |of |5 |m. |If |an |object
|of |mass |2 |kg |is |placed |on |the |plane, |which |of |the |following |best |approximates |the |net |force |it
|feels? |- |CORRECT |ANSWER✔✔-5 |N
A |20 |N |block |is |being |pushed |across |a |horizontal |table |by |an |18 |N |force. |If |the |coefficient |of |
kinetic |friction |between |the |block |and |the |table |is |0.4, |find |the |acceleration |of |the |block. |- |
CORRECT |ANSWER✔✔-5 |m/s2
The |coefficient |of |static |friction |between |a |box |and |a |ramp |is |0.5. |The |ramp's |incline |angle |is |
30°. |If |the |box |is |placed |at |rest |on |the |ramp, |the |box |will |- |CORRECT |ANSWER✔✔-accelerate |
down |the |ramp
Assuming |a |frictionless, |massless |pulley, |determine |the |acceleration |of |the |blocks |once |they |
are |released |from |rest. |- |CORRECT |ANSWER✔✔-(M-m/M+m)g
If |all |of |the |forces |acting |on |an |object |balance |so |that |the |net |force |is |zero, |then |- |CORRECT |
ANSWER✔✔-None |of |these. |
