NEET Physics: Questions 145  150 of 2142
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Question number: 145
» Kinematics » Motion in a Plane
Question
A ball thrown by one player reaches the other in 2 sec. The maximum height attained by the ball above the point of projection will be about
Choices
Choice (4)  Response  

a.  2.5 m 

b.  7.5 m 

c.  10 m 

d.  5 m 

Question number: 146
» Kinematics » Average Speed and Instantaneous Velocity
Question
A projectile thrown from a height of 10 m with velocity of √2 m/s, the projectile will fall, from the foot of projection, at distance (g = 10 m/s ^{2})
Choices
Choice (4)  Response  

a.  1 m 

b.  3 m 

c.  √2 m 

d.  2 m 

Question number: 147
» Kinematics » Uniformly Accelerated Motion
Question
The shaft of an electric motor starts from rest and on the application of a torque, it gains an angular acceleration given by a = 3t –t ^{3} during the first 2 seconds after it starts after which a = 0. The angular velocity after 6 sec will be –
Choices
Choice (4)  Response  

a.  2 rad/sec 

b.  1 rad/sec 

c.  3 rad/sec 

d.  4 rad/sec 

Question number: 148
» Kinematics » Motion in a Straight Line
Question
A motor car is travelling at 30 m/s on a circular road of radius 500 m. It is increasing its speed at the rate of 2 m/s ^{2}. Its net acceleration is (in m/s ^{2}) –
Choices
Choice (4)  Response  

a.  0 

b.  1.8 

c.  2 

d.  2.7 

Question number: 149
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball is thrown from ground level so as to just clear a wall 4 metres high at a distance of 4 metres and falls at a distance of 14 metres from the wall. The magnitude of velocity on the ball will be
Choices
Choice (4)  Response  

a.  √l82 m/s 

b.  √181 m/s 

c.  √186 m/s 

d.  √185 m/s 

Question number: 150
» Kinematics » Uniformly Accelerated Motion
Question
The shaft of an electric motor starts from rest and on the application of a torque, it gains an angular acceleration given by a = 3t –t ^{2} during the first 2 seconds after it starts after which a = 0. The angular velocity after 6 sec will be –
Choices
Choice (4)  Response  

a.  3/10 rad/sec 

b.  4/30 rad/sec 

c.  10/3 rad/sec 

d.  30/4 rad/sec 
