Kinematics (NEET Physics): Questions 6  9 of 229
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Question number: 6
» Kinematics » Motion in a Straight Line
Question
A point moves with uniform acceleration and V _{1}, v _{2} and v _{3 } denote the average velocities in the three successive intervals of time t _{1}, t _{2} and t _{3}. Which of the following relations is correct?
Choices
Choice (4)  Response  

a.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} + t _{2}) / (t _{2} + t _{3}) 

b.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} – t _{2}) / (t _{2} + t _{3}) 

c.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} – t _{2}) / (t _{2}  t _{3}) 

d.  None of the above 

Question number: 7
» Kinematics » Motion in a Straight Line
Question
What will be the ratio of the distances moved by a freely falling body from rest in 7^{th} and 9^{th} seconds of journey?
Choices
Choice (4)  Response  

a.  13: 17 

b.  4: 5 

c.  7: 9 

d.  16: 25 

Question number: 8
» Kinematics » Motion in a Plane
Question
from the top of a tower, a particle is thrown vertically downwards with a velocity of 10 m/s. The ratio of the distances, covered by it in the 3^{rd} and 2^{nd} seconds of the motion is (Take g = 10m/s2)
Choices
Choice (4)  Response  

a.  3: 6 

b.  6: 3 

c.  5: 7 

d.  7: 5 

Question number: 9
» Kinematics » Average Speed and Instantaneous Velocity
Assertion (Ꭺ)
The velocity of a body A relative to the body B is the sum of the velocities of bodies A and B if both travel in opposite direction on a straight line.
Reason (Ꭱ)
The velocity of a body A relative to the body B is the difference of the velocities of bodies A and B if both travel in opposite direction on a straight line.
Choices
Choice (4)  Response  

a.  Ꭺ is true but Ꭱ is false 

b.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

c.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

d.  Ꭺ is false but Ꭱ is true 
