KinematicsAverage Speed and Instantaneous Velocity (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 49  53 of 108
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Question number: 49
» Kinematics » Average Speed and Instantaneous Velocity
Question
A car of 500 kg moving with a velocity of 18 km/hr is stopped by the brake force of 500 N. The distance covered by it before coming to rest is –
Choices
Choice (4)  Response  

a.  1.44 m 

b.  12.5 m 

c.  12 m 

d.  16.2 m 

Question number: 50
» Kinematics » Average Speed and Instantaneous Velocity
Question
A train has to negotiate a curve of radius 600 m. By how much should the outer rail be raised with respect to inner rail for a speed of 48 km/hr. The distance between the rails is 2 m.
Choices
Choice (4)  Response  

a.  12 m 

b.  12 cm 

c.  4.5 m 

d.  4.5 cm 

Question number: 51
» Kinematics » Average Speed and Instantaneous Velocity
Question
A body of mass 0.02 kg falls from a height of 5 meter into a pile of sand. The body penetrates the sand a distance of 5 cm before stopping. What force has the sand exerted on the body?
Choices
Choice (4)  Response  

a.  1.96 N 

b.  0.196 N 

c.  19.6 N 

d.  0.0196 N 

Question number: 52
» Kinematics » Average Speed and Instantaneous Velocity
Question
Two bodies P and Q are moving along positive xaxis their positiontime graph is shown below. If VPQ is velocity of P w. r. t. Q and VQP is velocity of Q w. r. t P, then
Select the correct answers and mark it according to the following codes:
(1)
(2)
(3)
(4)
Choices
Choice (4)  Response  

a.  1,2 and 3 are correct 

b.  2 and 4 are correct 

c.  1 and 3 are correct 

d.  1 and 2 are correct 

Question number: 53
» Kinematics » Average Speed and Instantaneous Velocity
Question
A cricket ball of mass 150 g is moving with a velocity of 12m/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.  40 N 

b.  48 N 

c.  400 N 

d.  480 N 
