Question 1 :
The incorrect statement about newton's second law of motion is that:<br/>
Question 3 :
Assertion: Newton's third law of motion is applicable only when bodies are in motion.
Reason: Newton's third law applies to all types of forces. e.g. gravitational, electric or magnetic forces etc.,
Question 4 :
When a force of 1 newton acts on a mass of $1 kg$ that is able to move freely, the object moves with a/an
Question 5 :
A driver accelerates his car first at the rate of $1.8 {m}/{{s}^{2}}$ and then at the rate of $1.2 {m}/{{s}^{2}}$. The ratio of the forces exerted by the engines will be respectively equal to
Question 6 :
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 7 :
A ball$A$ is moving with velocity $5 m/s$ collides elastically with another identical ball $B$ which is initially at rest such that the velocity of $B$ after the collision makes an angle of $37^\circ $ with the initial velocity of $A$. Then the <b>INCORRECT</b>  statement is :
Question 8 :
A bullet weighing 10 g and moving at 300 ms$^{-1}$ strikes a 5 kg block of ice and drops dead. The ice block is sitting on frictionless level surface. The speed of the block, after the collision is :
Question 9 :
In an elastic collision of two particles the following is conserved
Question 10 :
A rocket is propelled by a gas which is initially at a temperature of $4000 \ K$. The temperature of the gas falls to $1000 \ K$ as it leaves theexhaust nozzle. The gas which will acquire the largest momentum<br>while leaving the nozzle is
Question 11 :
When an electron and a positron meet at low speed in empty 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 $1.02\, MeV$? 
Question 12 :
Assertion: Water at the foot of the water fall is always at different temperature from that at the top.
Reason: The potential energy of water at the top is converted into heat energy during falling
Question 13 :
A man fires a bullet of mass $200 g$ at a speed of $5 m/s$. The gun is of one kg mass. The velocity with which the gun will recoil backward is
Question 14 :
 A heavier body moving with certain velocity collides head on elastically with a lighter body at rest. Then<br/>
Question 15 :
A bullet of mass $0.01 kg$ moving at a speed of $500 m/sec$, strikes a block of mass $2 kg$, suspended by a rope of length $5 m$. If the block rises to a height of $0.1 m$, then with what velocity does the bullet emerge from the block? <br>
Question 16 :
If weight of a body is 1000 dyne, then the mass of the body will be(take g = 10ms$^{-}$ $^{2}$)
Question 17 :
If $120 N $ of force is acting on a body with $6 ms^{-2}$ acceleration, Its mass is _____________.
Question 18 :
A particle in equilibrium is subjected tofour forces: $\displaystyle F_{1}= -10\hat k, F_{2} = u \left( \frac{4}{13}\hat i-\frac{12}{13}\hat j+\frac{3}{13}\hat k \right),F_{3}=v \left( -\frac{4}{13}\hat i-\frac{12}{13}\hat j+\frac{3}{13}\hat k \right)$ and $F_{4}=w (\cos \theta\hat i + \sin \theta\hat j)$Then:<br>
Question 19 :
A student attempts to pull himself up by tugging on his hair. He will not succeed.
Question 20 :
A body of mass 40 gm is moving with a constant velocity of 2 cm/sec on a horizontal frictionless table. The force on the table is -
Question 23 :
A boy is running along the circumference of a stadium with constant speed. Which of the following is changing in this case?
Question 24 :
If a bus travelling at $20\ m/s$ is subject to a steady deceleration of $5\ m/s^{2}$, how long will it take to come rest?
Question 25 :
Consider the following two statements A and B and identify the correct option:<br/>A) When a rigid body is rotating about its own axis at a given instant, all particles of body possess same angular velocity.<br/>B) When a rigid body is rotating about its own axis, the linear velocity of a particle is directly proportional to its perpendicular distance from axis.<br/>
Question 26 :
A parachutist after bailing out falls $50\ m$ without friction. When parachute opens, it decelerates at $2\ m{ s }^{ -2 }$. He reaches the ground with speed $3\ m{ s }^{ -1 }$. At what height did he bail out? ($g=9.81m/{ s }^{ 2 }$)
Question 27 :
A particle moves on the $x-$ axis. When the particle's acceleration is positive and increasing then
Question 30 :
The displacement $x$ of a particle varies with time $t$ as $x=a{ e }^{ -\alpha t }+b{ e }^{ \beta t }$, where $a,  b,  \alpha $  and  $\beta$ are positive constants. The velocity of the particle will
Question 31 :
A particle travels $10$m in first $5$ seconds $10$ cm in next $3$ seconds. Assuming constant acceleration what is the distance travelled in next $2$ second ?
Question 32 :
A ball is thrown from the top of a tower in vertically upward direction. Velocity at a point h metre below the point of projection is twice of the velocity at a point h metre above the point of projection. Find the maximum height reached by the ball above the top of tower.
Question 33 :
A $ 210 $ meter long train is moving due North at a of $ 25\,m/s $ . A small bird is flying due South a little above the train with speed $ 5\,m/s $. Thetime taken by the bird to cross the train is
Question 34 :
A body, initially at rest, starts moving with a constant acceleration $2 m{s}^{-2}$. Calculate the distance travelled in 5 s.
Question 35 :
<i></i>A body starts from rest with a uniform acceleration of 2m/s$^2$ for 10 sec , with moves with constant speed for 30 sec then decelerates by 4 m/s$^2$ to zero . What is the distance covered by the body?
Question 36 :
A stone is dropped from the top of a tower and one second later, a second stone is thrown vertically downward with a velocity $\displaystyle 20 m/s$.The second stone will overtake the first after travelling a distance of (g= $\displaystyle 10 m/s^{2}$):<br/>
Question 37 :
A stone is thrown vertically upwards. When the stone is at a height equal to half of its maximum height its speed will be 10 m/s, then the maximum height attained by the stone is (Take g =10 $m/s^2$)
Question 38 :
A body moving with uniform acceleration travels $84 m$ in $6 s$ and $264 m$ in $11 s$. Find the acceleration of the body.
Question 40 :
A particle starts from rest with constant acceleration for $20$ sec. If it travels a distance $y_1$ in the first $10$ sec and a distance $y_2$ in the next $10$ sec then?
