KinematicsAverage Speed and Instantaneous Velocity (NEET Physics): Questions 48  52 of 108
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Passage
Velocity at a general point P (x, y) for a horizontal projectile motion is given by
V = =
α is angle made by v with horizontal in clockwise direction Trajectory equation for a horizontal projectile motion is given by x = v _{x} t = ut
y = ( ) gt ^{2 }
Eliminating t, We get y =
Question number: 48 (3 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
An aeroplane is in a level flying at an speed of 144 km/hr at an altitude of 1000 m. How far horizontally from a given target should a bomb be released from it to hit the target?
Choices
Choice (4)  Response  

a.  471.34 m 

b.  671.43 m 

c.  371.34 m 

d.  571.43 m 

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 
