KinematicsAverage Speed and Instantaneous Velocity (NEET Physics): Questions 58  63 of 108
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Question number: 58
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ship is steaming towards east at a speed of 10 ms ^{1}. A woman runs across the deck at a speed of 8 ms ^{1} in the direction at right angles to the direction of motion of the ship i. e. towards north. What is the velocity of the woman relative to sea?
Choices
Choice (4)  Response  

a.  11.64 m/s 

b.  17 m/s 

c.  12.806 m/s 

d.  17.506 m/s 

Question number: 59
» 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 

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: 60 (1 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
Minimum distance between particle A and B during motion will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  h 

Question number: 61 (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. 


Question number: 62 (3 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: 63
» Kinematics » Average Speed and Instantaneous Velocity
Question
A boy standing on a weighing machine observes his weight as 200 N. When he suddenly jumps upwards, his friend notices that the reading increased to 400 N. The acceleration by which the boy jumped will be
Choices
Choice (4)  Response  

a.  9.8 m/s ^{2} 

b.  29.4 m/s ^{2} 

c.  4.9 m/s ^{2} 

d.  14.7 m/s ^{2} 
