Question 3 : Assertion: According to Newton's third law, the sum of action and reaction forces on a body is equal to zero. Reason: The action and reaction forces act on different bodies.

Question 5 : If you are asked to push an object so that the acceleration produced in it has to be twice as before, then the force required will be :

Question 7 : In a game of tug of wars, a condition of equilibrium exists. Both the teams pull the rope with a force of $10^4 N$. Find the tension in the rope.

Question 9 : When a horse pulls the tonga, the tonga moves forward due to:<br/>

Question 11 : Use Newton's 2nd law of motion, find out the third missing quantity if mass and force on a body is given?

Question 12 : A parachutist along with the parachute has a mass of 75 kg. He jumps from a large height and&#160;is coming down with a uniform velocity with the parachute fully opened. The magnitude of force due to the air&#160;resistance is: ( take g$={10m/s}^{ 2 }$).<br/>

Question 13 : Assertion (A): According to Newton&#8217;s third law sum of action and reaction is not equal to zero&#160;Reason (R) : The forces action and reaction acts&#160;on different bodies.

Question 14 : The incorrect statement about newton's second law of motion is that:<br/>

Question 15 : The force needed to produce an acceleration&#160;of $\displaystyle 6{ m }/{ { s }^{ 2 } }$&#160;in a ball of mass 4 kg will be :<br/>

Question 16 : Assertion: There will be no action of external force on an object moving with uniform velocity. Reason: The force acting on an object need not cause motion. It may deform the dimension of it.

Question 17 : A book rests on a table, exerting a downward force on the table. The reaction to this force is <br>

Question 19 : 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 : If set of forces acting on a body are balanced, the body

Question 21 : A 10 N force applied on a body produces in it an acceleration of $2 \,m\, s^{-2}$, then the mass of the body is ______.

Question 22 : When a man sitting on a chair tries to lift himself by applying a force on the chair,

Question 25 : State whether given statement is True or False.<br/>A five rupees coin has more inertia than&#160;a one-rupee coin.<br/>

Question 26 : Which of the following quantities may remain constant during the motion of an object in a circular path?<br/>

Question 28 : State whether the given statement is True or False :A uniform linear motion is unaccelerated, while a uniform circular motion is an accelerated motion.<br/>

Question 29 : The tip of seconds' hand of a watch exhibits uniform circular motion on the circular dial of the watch<br>State whether given statement is True/False?

Question 30 : (1) : When a rigid body is rotating about&#160;its own axis, all particles of that body have the same&#160;angular velocity.<br/>&#160;(2) : All particles of the body have the same&#160;time period.<br/>

Question 31 : State whether true or false.<br/>A particle rotating in a circular path may have constant speed but velocity changes continuously.

Question 32 : A particle is moving along a circle with uniformspeed. The physical quantity which is constantboth in magnitude and direction, is<br>

Question 34 : When a body moves in circular path with uniform speed, it's motion is called uniform circular motion<br>State whether given statement is True/False?

Question 35 : If the body is moving in a circle of radius $r$ with a constant speed $V$, its angular velocity is

Question 36 : If a particle moves in a closed path with a constant speed of 10 m/s, we can always say, that there will&#160;be a change in velocity.&#160;

Question 38 : Which of the following is an example of uniform circular motion?

Question 39 : A food packet is released from a helicopter rising steadily at the speed of $2\ { m }/{ s }$. After $2$ seconds the velocity of the packet is (Take&#160;$g=10 &#160;{ m }/{ { s }^{ 2 } } $):

Question 41 : A frog that jumps upwards is under the influence of gravity and accelerates at a constant rate.<br>If it has an initial upwards velocity of ${v}_{0}=5.00{m}/{s}$, approximately how far above the ground will it be when it has velocity $v=-2.50{m}/{s}$?

Question 42 : A stone tied to a string is whirled in a circle.&#160;As it is revolving, the rope suddenly breaks.Then :

Question 43 : A cart is released from rest at the top of a long ramp at time $t = 0$ seconds and moves down the ramp at a constant acceleration rate. At a time of t, the cart has reached a speed of $2 m/s$. How fast will the cart be moving at the time of $3t$?

Question 44 : During the sharpening of a knife with the help of a&#160;grind stone, the direction of motion of sparks is:<br/>

Question 45 : An artificial satellite of the earth releases a&#160;packet. If air resistance is neglected, the&#160;point where the packet will hit,<br/>

Question 46 : If a trolley starts from rest with an acceleration of 2 $m/s^2$, the velocityof the body after 4 s would be

Question 47 : A ball is shot vertically upward with a given initial velocity. It reaches a maximum height of $100$m. If on a second shot, the initial velocity is doubled then the ball will reach a maximum height of.

Question 48 : Assertion(A): In uniform circular motion the particle&#160;has zero acceleration.<br/>Reason (R) : Centripetal force is essential to keep&#160;a particle in circular motion.<br/>

Question 49 : A body is travelling in a circle at constant speed. It&#160;

Question 50 : The distance covered by a body moving along X-axis with initial velocity 'u' and uniform acceleration 'a' is given by $x=ut+\frac {1}{2}at^2$. This result is a consequence of