Relative Velocity NEET Questions

Physics - Kinematics

Relative Velocity MCQ Questions


1.
The velocity of object A relative to object B (v_AB) is defined as:
A.
v_A + v_B
B.
v_A - v_B
C.
v_B - v_A
D.
(v_A + v_B)/2
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ANSWER :
B. v_A - v_B
2.
v_AB and v_BA are related as:
A.
v_AB = v_BA
B.
v_AB = 2 v_BA
C.
v_AB = -v_BA
D.
v_AB = v_BA / 2
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ANSWER :
C. v_AB = -v_BA
3.
Two trains A and B move in the SAME direction with speeds 60 km/h and 40 km/h respectively. Speed of A relative to B is:
A.
100 km/h
B.
20 km/h
C.
40 km/h
D.
60 km/h
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ANSWER :
B. 20 km/h
4.
Two cars approach each other. Car A moves at 30 m/s eastward and car B moves at 20 m/s westward. Speed of A relative to B is:
A.
10 m/s
B.
50 m/s
C.
30 m/s
D.
20 m/s
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ANSWER :
B. 50 m/s
5.
Two objects A and B have the same velocity. The relative velocity of A with respect to B is:
A.
2v_A
B.
v_A
C.
Zero
D.
v_A - v_B
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ANSWER :
C. Zero
6.
A police van at 30 km/h fires a bullet (muzzle speed 150 m/s) at a thief's car going at 192 km/h in same direction. Speed of bullet relative to thief's car is:
A.
120 m/s
B.
105 m/s
C.
93 m/s
D.
143 m/s
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ANSWER :
B. 105 m/s