Question 2 :
Consider the following two statements A and B&#160;and identify the correct option:<br/>A) When a rigid body is rotating about its own&#160;axis at a given instant, all particles of body&#160;possess same angular velocity.<br/>B) When a rigid body is rotating about its own&#160;axis, the linear velocity of a particle is directly&#160;proportional to its perpendicular distance from&#160;axis.<br/>

Question 3 :
Fill in the blank.In circular motion, force is always _______ to the displacement.

Question 4 :
The time taken by a vertically projected body before reaching the ground is:

Question 6 :
In a uniform linear motion which of the following quantities remains zero?

Question 7 :
The total energy of a particle that moves&#160;along a circular path in vertical plane is:<br/>

Question 8 :
A truck and a car are moving with equal velocity. On applying brakes, if both decelerate at the same rate,what happens?

Question 11 :
A body is revolving with a constant speed along a circle .If its direction of motion is reversed but the speed remains the same. Then,

Question 12 :
The declaration experienced by a moving motor boat, after its engine is cut-off is given by $$\frac { \mathrm { d } \mathrm { v } } { \mathrm { dt } } = - \mathrm { k } \mathrm { v } ^ { 3 }$$where k is constant If $$\mathbf { v } _ { 0 }$$is the magnitude of the velocity at cut-off, the magnitude of the velocity at a time t after the cut off is

Question 13 :
The length of a seconds hand in watch is $$1$$ $$cm$$. The change in velocity of its tip in $$15\ s$$ is<br>

Question 14 :
A body moving in circular motion with constant speed has :

Question 15 :
Two persons just manage to push a block from left to right direction along a horizontal level road with uniform velocity. When the same block is pushed by three persons in same direction a constant acceleration of $$0.2m{s}^{-2}$$ is produced in the block. If the five persons push the block in same direction together, then the magnitude of acceleration of the block will be (Assume that each person applies the force equal in magnitude)

Question 16 :
The mass of an object is a $$\underline{ &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; }$$ measure of inertia:<br/>

Question 17 :
If action and reaction were to act on the same body,

Question 18 :
An automobile that is pulling a trailer&#160;is accelerating on a level road. The force that the automobile exerts on the trailer is:

Question 20 :
A force of $$10 N$$ acts on a body of mass $$5 kg$$. Find the acceleration produced.

Question 21 :
The incorrect statement about newton's second law of motion is that:<br/>

Question 22 :
Which law is the special case ofNewton's second law of motion ?

Question 23 :
On which of the following do action reaction forces act upon?

Question 25 :
Which of the following statements are correct for action and reaction forces?<br>

Question 26 :
A $$7500\ kg$$ rocket is set for vertical firing. The exhaust speed is $$800\ m/s$$ w.r.t. rocket. To give an vertical upward acceleration of $$10{m/s^2}$$, the amount of gas ejected per second for the needed thrust will be

Question 27 :
When an electron and a positron meet at low speed in empty&#160;space, they annihilate each other to produce two $$0.511-MeV$$ gamma rays. What law would be violated if they produced one gamma-ray with the energy of $$1.02\, MeV$$?&#160;

Question 28 :
A rocket is ejecting $$50g$$ of gases per sec at a speed of $$500m /s$$.<br>The accelerating force on the rocket will be

Question 29 :
In an elastic collision of two particles the following is conserved

Question 30 :
In a gravity free space, a man of mass $$M$$ standing at a height $$h$$ above the floor, throws a ball of mass $$m$$ straight down with a speed $$u$$. When the ball reaches the floor, the distance of the man above the floor will be