Kinematics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 155  159 of 233
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Question number: 155
» Kinematics » Uniform and NonUniform Motion
Question
An engine of mass 6 x 10 ^{4} kg pulls a coach of mass 2 x 10 ^{4} kg. Suppose that there is a resistance of 1 N per 100 kg acting on both coach and engine, and that the driving
Force of engine is 4800 N. The acceleration of the engine and tension in the coupling will respectively be
Choices
Choice (4)  Response  

a.  0.04 m/s ^{2}, 20 N 

b.  0.05 m/s ^{2}, 1200 N 

c.  400 m/s ^{2}, 200 N 

d.  0.09 m/s ^{2}, 2000 N 

Question number: 156
» Kinematics » Average Speed and Instantaneous Velocity
Question
A train has to negotiate a curve of radius 400 m. By how much should the outer rail be raised with respect to inner rail for a speed of 48 km/hr. The distance between the rails is 1 m.
Choices
Choice (4)  Response  

a.  12 m 

b.  12 cm 

c.  4.5 m 

d.  4.5 cm 

Question number: 157
» Kinematics » Uniform and NonUniform Motion
Question
The total mass of an elevator with a 50 kg man in it is 500 kg. This elevator moving upward with a speed of 8 m/sec, is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be
Choices
Choice (4)  Response  

a.  624 N, 3900 N 

b.  3900 N, 390 N 

c.  620 N, 7800 N 

d.  7800 N, 390 N 

Passage
Read the passage given below and answer the questions that follows:
Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 WkgV2, the speed of light, c  3.0 x 108 m/s, and Planck’s constant, ft = 6.6x 10  34 Js1. Two particles A and B are projected in the vertical plane with same initial velocity u0 from part (0, 0) and (, h) towards each other as shown in figure at t = 0.
Question number: 158 (1 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
The path of particle A with respect to particle B will be 
Choices
Choice (4)  Response  

a.  Straight line parallel to yaxis 

b.  Straight line parallel to xaxis 

c.  parabola 

d.  None of the above 

Question number: 159 (2 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
The time when separation between A and B is minimum is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

