KinematicsAverage Speed and Instantaneous Velocity (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 22  25 of 108
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Question number: 22
» Kinematics » Average Speed and Instantaneous Velocity
Question
The length of second’s hand in a watch is 1 cm. The change in velocity of its tip in 15 second is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  0 

Question number: 23
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball is thrown from the top of a tower with an initial velocity of 10 m/s at an angle of 30° above the horizontal. It hits the ground at a distance of 17.3 m from the base of the tower. The height of the tower (g = 10 m/s2) will be
Choices
Choice (4)  Response  

a.  10m 

b.  110m 

c.  100m 

d.  12m 

Question number: 24
» Kinematics » Average Speed and Instantaneous Velocity
Question
The vertical section of a road over a canal bridge in the direction of its length is in the form of circle of radius 8.9 meter. Find the greatest speed at which the car can cross this bridge without losing contact with the road at its highest point, the center of gravity of the car being at a height h = 1.1 meter from the ground. (Take g = 10 m/sec2)
Choices
Choice (4)  Response  

a.  7 m/s 

b.  10 m/s 

c.  5 m/s 

d.  13 m/s 

Question number: 25
» Kinematics » Average Speed and Instantaneous Velocity
Question
A projectile can have the same range R for two angles of projections. If t1 and t2 be the times of flight in two cases, then choose the incorrect relations –
Choices
Choice (4)  Response  

a.  t _{1} t _{2} 

b.  t _{1} t _{2} t _{1} t _{2} 

c.  t _{1} t _{2} 

d.  t _{1} t _{2} 
