NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 882  885 of 2142
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Question number: 882
» Kinematics » Average Speed and Instantaneous Velocity
Question
A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 gm and a muzzle velocity of 800 m/s. What velocity does rifle man acquire at the end of 10 shots?
Choices
Choice (4)  Response  

a.  0.3 m/s 

b.  1.2 m/s 

c.  0.5 m/s 

d.  0.8 m/s 

Question number: 883
» Laws of Motion » Force and Inertia
Question
Choose the correct statements 
(1) For equilibrium of a body under the action of concurrent forces
(2) If the downward acceleration of the lift is a = g, then the body will experience weightlessness.
(3) If the downward acceleration of the body is a > g, then the body will rise up to the ceiling of lift
(4) If the downward acceleration of the lift is a > g, then the body will experience weightlessness.
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 2 are correct 

b.  1, 2 and 3 are correct 

c.  2 and 4 are correct 

d.  1 and 3 are correct 

Question number: 884
» Work, Energy and Power » Work Done
Question
A force F = (7  2x + 3x ^{2}) N is applied on a 2 kg mass which displaces it from x = 0 to x = 5 m. Work done in joule is 
Choices
Choice (4)  Response  

a.  35 

b.  135


c.  270 

d.  70 

Question number: 885
» Laws of Motion » Newton's Law » Newton's Second Law of Motion
Question
Conservation of linear momentum is equivalent to
Choices
Choice (4)  Response  

a.  Newton ‘s first law of motion 

b.  Newton’s second law of motion 

c.  Newton ‘s third law of motion 

d.  Conservation of angular momentum. 
