Kinematics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 206  208 of 233
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Question number: 206
» Kinematics » Average Speed and Instantaneous Velocity
Question
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 900 m/s. What velocity does rifle man acquire at the end of 10 shots.
Choices
Choice (4)  Response  

a.  0.3 m/s 

b.  0.6 m/s 

c.  0.9 m/s 

d.  0.5 m/s 

Passage
Read the passage given below and answer the questions that follow:
A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).
Question number: 207 (1 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).
Speed of sphere just after collision is
Choices
Choice (4)  Response  

a.  35/43 m/s 

b.  30/43 m/s 

c.  27/43 m/s 

d.  40/43 m/s 

Question number: 208 (2 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).
Angular speed of sphere just after collision is
Choices
Choice (4)  Response  

a.  2.5 rad/sec 

b.  3 rad/sec 

c.  Zero 

d.  2 rad/sec 
