KinematicsAverage Speed and Instantaneous Velocity (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 96  99 of 108
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 96
» Kinematics » Average Speed and Instantaneous Velocity
Question
A bullet of mass 0.01 kg travelling at a speed of 300 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The center of gravity of the block is found to rise a vertical distance of 0.1 m The speed of the bullet after it emerges from the block will be 
Choices
Choice (4)  Response  

a.  220 m/s 

b.  110 m/s 

c.  20 m/s 

d.  1.4 m/s 

Question number: 97
» Kinematics » Average Speed and Instantaneous Velocity
Question
A bullet of mass 20 g hits a block of mass 1.98 kg suspended from a massless string of length 100 cm and sticks to it. The bullet flies down at an angle of 30° to the horizontal with a velocity of 200 m/s. Through what height the block will rise
Choices
Choice (4)  Response  

a.  0.75 m 

b.  0.45 m 

c.  0.30 m 

d.  0.15 m 

Question number: 98
» Kinematics » Average Speed and Instantaneous Velocity
Question
The rate of burning of fuel in a rocket is 60 gm/sec. and comes out with and velocity 5 x 10 ^{3} m/s. The force exerted by gas on rocket will be –
Choices
Choice (4)  Response  

a.  2.5 x l0 ^{4 } N 

b.  2.5 x l0 ^{6 } N 

c.  300 N 

d.  200 N 

Question number: 99
» Kinematics » Average Speed and Instantaneous Velocity
Question
A 30 g bullet pierces through a plate of mass m _{1} = 1 kg and then comes to rest inside a second plate of mass m _{2} = 1.5 kg. It is found that the two plates, initially at rest, now move with equal velocities. The percentage loss in the initial velocity of bullet when it is between m1 and m _{2}. (Neglect any loss of material of the bodies, due to action of bullet. ) will be 
Choices
Choice (4)  Response  

a.  25.67% 

b.  46.45% 

c.  20.68% 

d.  39.525% 
