KinematicsAverage Speed and Instantaneous Velocity (NEET Physics): Questions 88  92 of 108
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 88
» 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: 89
» Kinematics » Average Speed and Instantaneous Velocity
Question
In the figure shown, the velocity of each particle at the end of 4 sec will be 
Choices
Choice (4)  Response  

a.  2.18 m/s 

b.  0.872 m/s 

c.  0.218 m/s 

d.  8.72 m/s 

Question number: 90
» Kinematics » Average Speed and Instantaneous Velocity
Question
The mass of a rocket is 500 kg and the relative velocity of the gases ejecting from it is 250 m/s with respect to the rocket. The rate of burning of the fuel in order to give the rocket an initial acceleration 20 m/s ^{2} in the vertically upward direction (g = 10 m/s ^{2}), will be –
Choices
Choice (4)  Response  

a.  45 kg/s 

b.  10 kg/s 

c.  60 kg/s 

d.  30 kg/s 

Question number: 91
» 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: 92 (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).
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 
