KinematicsUniform and NonUniform Motion (NEET Physics): Questions 6  9 of 15
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Question number: 6
» Kinematics » Uniform and NonUniform Motion
Question
The total mass of an elevator with a 50 kg man in it is 500 kg. This elevator moving upward with a speed of 8 m/sec, is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be
Choices
Choice (4)  Response  

a.  624 N, 3900 N 

b.  3900 N, 390 N 

c.  620 N, 7800 N 

d.  7800 N, 390 N 

Question number: 7
» Kinematics » Uniform and NonUniform Motion
Question
A block of metal weighing 2 kg is resting on a frictionless plane. It is stick by a jet releasing water at a rate of 1 kg/s and at a speed of 5 m/s. The initial acceleration of the block will be –
Choices
Choice (4)  Response  

a.  0 

b.  2.5 m/s ^{2} 

c.  0.4 m/s ^{2} 

d.  5 m/s ^{2} 

Question number: 8
» Kinematics » Uniform and NonUniform Motion
Question
An engine of mass 5 x 10 ^{4} kg pulls a coach of mass 4 x 10 ^{4} kg. Suppose that there is a resistance of 1 N per 100 kg acting on both coach and engine, and that the driving
force of engine is 4500 N. The acceleration of the engine and tension in the coupling will respectively be
Choices
Choice (4)  Response  

a.  0.4 m/s ^{2}, 200 N 

b.  0.4 m/s ^{2}, 20 N 

c.  4 m/s ^{2}, 200 N 

d.  0.04 m/s ^{2, } 2000 N 

Question number: 9
» Kinematics » Uniform and NonUniform Motion
Question
A block of metal weighing 5 kg is resting on a frictionless plane. It is stack by a jet releasing water at a rate of 1 kg/s and at a speed of 10 m/s. The initial acceleration of the block will be –
Choices
Choice (4)  Response  

a.  5 m/s ^{2} 

b.  2 m/s ^{2} 

c.  2.5 m/s ^{2} 

d.  0 
