Kinematics (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 126  130 of 233
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Question number: 126
» Kinematics » Motion in a Straight Line
Question
A motor car is travelling at 50 m/s on a circular road of radius 600 m. It is increasing its speed at the rate of 4 m/s ^{2}. Its net acceleration is (in m/s ^{2}) –
Choices
Choice (4)  Response  

a.  4.8 

b.  5.7 

c.  2 

d.  0 

Question number: 127
» Kinematics » Average Speed and Instantaneous Velocity
Question
A particle moves in a circle of radius 20cm with a linear speed of 10m/s. The angular velocity will be –
Choices
Choice (4)  Response  

a.  100 rad/s 

b.  50 rad/s 

c.  25 rad/s 

d.  75 rad/s 

Question number: 128
» Kinematics » Average Speed and Instantaneous Velocity
Question
A car driver is negotiating a curve of radius 200 m with a speed of 15 km/hr. The angle through which he has to lean from the vertical will be –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 129
» Kinematics » Average Speed and Instantaneous Velocity
Question
A particle is moving in a circular path with velocity varying with time as v = 1.5t+ 2t. If the radius of circular path is 2 cm. the angular acceleration at t = 2 sec will be –
Choices
Choice (4)  Response  

a.  400 rad/sec ^{2} 

b.  4 rad/sec ^{2} 

c.  0.4 rad/sec ^{2} 

d.  40 rad/sec ^{2} 

Question number: 130
» Kinematics » Motion in a Plane
Question
A particle is moving in a plane with a velocity given by, u = u0 i + (∞a cos ∞t) j, where i and j are unit vectors along x and yaxes respectively. If the particle is at the origin at t = 0, then its distance from the origin at time t = 3π/2∞ will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

