Question 1 :
In which of the following cases the net force is not zero?

Question 2 :
Which of the following equations or principle is most suitable to solve given question. A string is stretched by 1,000 N force. Calculate the tension in the string.

Question 4 :
When a bullet is fired from a rifle its momentum become $20\ kg\ m/s$. If the velocity of the bullet is $1000\ m/s$ what will be its mass?

Question 5 :
When we kick a stone, we get hurt. Due to which one of the following properties does it happens?<br/>

Question 6 :
A machine gun of mass 12 kg fires 25 g bullets at the rate of 4 bullets per second with a velocity of 500 m $s^{-1}$. What force must be applied to the gun to hold it in position?

Question 7 :
A body of mass 60kg is pushed with just enough force to start it moving on a rough surface with $\mu_{s} = 0.5$ and $\mu_{k} = 0.4$ and the force continues to act afterwards. The acceleration of the body is

Question 8 :
A block of mass 15 kg is placed on a long trolley The coefficient of friction between the block and trolley is 0. 18 The trolley accelerates with 0.5 m/$s ^ { 2 }$ for 20 s&#160;then what is the friction force

Question 9 :
Which of the following statements for a rigid object undergoing pure translational motion are<b> </b>false?<br/>

Question 10 :
A block of $1\ kg$ is stopped against a wall by applying a force $F$ perpendicular to the wall. If $\mu=0.2$ then minimum value of $F$ will be :

Question 11 :
A purple car is moving three times as fast as a yellow car. Each car slows down to a stop with the same constant acceleration.<br>How much more distance is required for the purple car to stop?

Question 12 :
A motorcycle is moving with a velocity 80km/hr ahead of a car moving with a velocity of 65 km/hr in the same direction. What is the relative velocity of the motorcycle with respect to the car :-

Question 13 :
A stone falls from a balloon that is descending at a uniform rate of $12ms^{-1}$. The displacement of the stone from the point of release after 10sec is :-

Question 14 :
The same retarding force is applied to stop a train. If the speed is doubled, then the distance will be

Question 15 :
State whether true or false.<br/>The sum of the time of ascent and the time of descent is called up time.<br/>

Question 16 :
Two particles start moving from the same point along the same stright line. The first moves with constant velocity v and the second with constant acceleration a. During the time that elapses before the second catches the first, the greater distance between the particles is

Question 17 :
A car is standing $200m$ behind a bus, which is also at rest. The two start moving at the same instant but with different forward accelerations. The bus has acceleration $2m/{s}^{2}$ and the car has acceleration $4m/{s}^{2}$. The car will catch up with the bus after a time of:

Question 18 :
Two persons A and B running on a straight track in the same direction observe a car. A says that the car is moving in east direction and B says that the car is moving in north direction. They contradict the direction but say that magnitude is same. If the speed of B is double that of the speed of A, then the true direction of the car will be<br/>

Question 19 :
Mass of a body is 210 gm and its density is $7.981 gm/{cm}^3$. What will be its volume with regard to significant digits?<br/>

Question 20 :
If $\mu =A+\dfrac { B }{ \lambda &#160;} +\dfrac { C }{ { \lambda }^{ 2 } } $ is dimensionally correct then the dimensions of A, B and C respectively are:($\mu $, A, B, C are constants)&#160;

Question 21 :
Which of the&#160;following does not give the unit of energy ?&#160;

Question 22 :
If pressure $P$, velocity $V$ and the time $T$ are taken as fundamental physical quantities, the dimensional formula of the force is: