Average Speed and Instantaneous Velocity NEET Questions

Physics - Kinematics

Average Speed and Instantaneous Velocity MCQ Questions


13.
For uniform motion along a straight line, which statement is correct?
A.
Average speed > |average velocity|
B.
Instantaneous speed > instantaneous velocity magnitude
C.
Average velocity equals instantaneous velocity at all times
D.
Average speed and average velocity are always different
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ANSWER :
C. Average velocity equals instantaneous velocity at all times
14.
A particle moves 40 m east in 4 s, then 30 m west in 6 s. Magnitude of average velocity is:
A.
7 m/s
B.
1 m/s
C.
4 m/s
D.
5 m/s
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ANSWER :
B. 1 m/s
15.
Which of the following can NEVER be negative for motion in one dimension?
A.
Instantaneous velocity
B.
Average velocity
C.
Instantaneous speed
D.
Displacement
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ANSWER :
C. Instantaneous speed
16.
For x = 0.08t³, average velocity between t = 3 s and t = 5 s is:
A.
3.84 m/s
B.
3.92 m/s
C.
4.12 m/s
D.
4.00 m/s
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ANSWER :
B. 3.92 m/s
17.
The v–t graph of a particle is a straight line parallel to the time axis. Instantaneous speed:
A.
Increases linearly with time
B.
Decreases with time
C.
Remains constant
D.
Cannot be determined
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ANSWER :
C. Remains constant
18.
Position x = ct³. Ratio of instantaneous velocity at t = T to average velocity from t = 0 to t = T is:
A.
1 : 1
B.
3 : 2
C.
2 : 3
D.
3 : 1
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ANSWER :
D. 3 : 1