Question 1 :
Which of the following utilizes Newton's third law of motion ?
Question 2 :
The momentum of a 10 kg body moving at 36 km/h is:
Question 4 :
 A cannon ball of mass $500 g$ is fired with a speed of $15 m s^{-1}$. Find its momentum.
Question 5 :
In which of the following cases the net force is not equal to zero?
Question 6 :
A body rests on a rough horizontal plane. A force is applied to the body directed towards the plane at an angle $\displaystyle \emptyset $ with the vertical. The body can be moved along the plane
Question 7 :
Sir Isaac Newton's third law of motion is called the action-reaction law. Which of the following statements appropriately describes the action-reaction forces?
Question 9 :
What is the momentum of an object of mass m, moving with a velocity v?<br>
Question 10 :
Which one of these is a real life application of the third law of motion?
Question 11 :
State if the following statements are true or false. Correct the statement if it is false.<br>Friction has no relation with our waling or running.
Question 12 :
Regarding linear momentum of a body<br>a. It is a measure of quantity of motion contained by the body<br>b. Change in momentum is the measure of impulse<br>c. Impulse and acceleration act in opposite direction to the change in momentum<br>d. In the case of uniform circular motion the linear momentum is conserved.
Question 13 :
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 14 :
A force $\overrightarrow { F } =\alpha \hat { i } +3\hat { j } +6\hat { k } $ is acting at a point $\overrightarrow { r } = 2\hat { i } -6\hat { j } -12\hat { k } $ . The value of $\alpha $ for which angular momentum about origin is conversed is ?<br/>
Question 15 :
A block slides down a rough inclined plane of slope angle $\theta$ with a constant velocity. It is then projected up the same plane with an initial velocity v. The distance travelled by the block up the plane before coming to rest is
Question 16 :
A particle slides on surface of a fixed smooth sphere starting from topmost point. The angle rotated by the radius through the particle, when it leaves contact with the sphere, is
Question 17 :
Which of the following statements for a rigid object undergoing pure translational motion are<b> </b>false?<br/>
Question 18 :
A chain of length $L$ and mass $m$ is allowed to fall on a table such that the part falling on the table comes to rest simultaneously. The force acting on the table when $l$ part of it has lied on the table is:<br/>
Question 19 :
A car of mass 100kg moves on a circular track of radius 20m. If the coefficient of friction is 0.64, then the maximum velocity with which the car can move is
Question 20 :
A bend in a level road  has a radius of $10 m$. Calculate the maximum speed which a car turning this bend may have without skidding. ($\mu\, =\, 0.81$)
Question 21 :
A block rests on a rough inclined plane making an angle of $30^{0}$ with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 $\mathrm{N}$, the mass of the block (in kg) is $($take $\mathrm{g}=10\mathrm{m}\mathrm{s}^{-2})$: <br>
