KinematicsAverage Speed and Instantaneous Velocity (NEET Physics): Questions 104  108 of 108
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Question number: 104
» Kinematics » Average Speed and Instantaneous Velocity
Question
The rate of burning of fuel in a rocket is 30 gm/sec. and comes out with and velocity 6 x 10 ^{3} m/s. The force exerted by gas on rocket will be –
Choices
Choice (4)  Response  

a.  200 N 

b.  300 N 

c.  180 ^{} N 

d.  2.5 x l0 ^{6 } N 

Question number: 105
» Kinematics » Average Speed and Instantaneous Velocity
Question
A body of mass 10 kg moving with a velocity of 5 m/s, rebounds on a wall with same velocity. The impulse on the body is 
Choices
Choice (4)  Response  

a.  100 Ns 

b.  30 Ns 

c.  120 Ns 

d.  60 Ns 

Question number: 106
» Kinematics » Average Speed and Instantaneous Velocity
Question
A cricket ball of mass 100 g is moving with a velocity of 10m/sec and is hit by a bat so that the ball is turned back with a velocity of 20 m/sec; the force on the ball acts for 0.01 sec, then the average force exerted by the bat on the ball will be
Choices
Choice (4)  Response  

a.  480 N 

b.  40 N 

c.  200 N 

d.  48 N 

Question number: 107
» Kinematics » Average Speed and Instantaneous Velocity
Question
The rate of burning of fuel in a rocket is 50 gm/sec. and comes out with and velocity 4 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.  250 N 

c.  2.5 x l0 ^{6 } N 

d.  200 N 

Question number: 108
» Kinematics » Average Speed and Instantaneous Velocity
Appeared in Year: 2016
Question
Two cars P and Q start from a point at the same time in a straight line and their positions are represented by and . At what time do the cars have the same velocity?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

