Question 1 :
A pile of $11$ books weighing $2 N$ each is sitting on a table. With what total force does the table push back on the books?
Question 2 :
A parachutist along with the parachute has a mass of 75 kg. He jumps from a large height and is coming down with a uniform velocity with the parachute fully opened. The magnitude of force due to the air resistance is: ( take g$={10m/s}^{ 2 }$).<br/>
Question 3 :
State whether given statement is True or False.<br/>When a net external force acts on an object of mass $m$, the acceleration that results is directly proportional to the net force and has a magnitude that is inversely proportional to the mass.<br/>
Question 5 :
When a net force acts on an object, then the object will accelerate in the direction of force with an acceleration proportional to the<br/>
Question 6 :
A ball of mass $m$ moving with velocity $v$ collides elastically with wall and rebounds. The change in momentum of the ball will be :
Question 7 :
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 9 :
A bullet loses 1/20 of its initial velocity after penetrating a plank. How many plank's required to stop the bullet?
Question 10 :
A ball collides elastically with another ball of the same mass. The collision is oblique and initially one of the ball was at rest. After the collision, the two balls move with same speeds. What will be the angle between the velocity of the balls after the collision?
Question 11 :
Assertion: A cloth covers a table. Some dishes are kept on it. The cloth can be pulled out without dislodging the dishes from the table.
Reason: For every action there is an equal and opposite reaction.
Question 12 :
A particle moves in the $xy-plane$ under the action of a force $F$ such that the components of its linear momentum $p$ at any time $t$ are $p_{x} = 2\cos t, p_{y} = 2\sin t$. The angle between $F$ and $p$ at time $t$ is
Question 13 :
A skater of mass m standing on ice throws a stone of mass M with a velocity of V in a horizontal direction. The distance over which the skater will move back (the coefficient of friction between the skater and the ice is $\mu$) :<br>
Question 14 :
If weight of a body is 1000 dyne, then the mass of the body will be(take g = 10ms$^{-}$ $^{2}$)
Question 15 :
If $120 N $ of force is acting on a body with $6 ms^{-2}$ acceleration, Its mass is _____________.
Question 16 :
If two masses $ m_1,\ m_2$ are thrown vertically upwords with the same velocity, what is the difference in the maximum height gained by them? ($ m_1 > m_2$)<br/>
Question 17 :
The motion of a bus going around a traffic roundabout is curvilinear motion. True or false.
Question 18 :
In which of following cases, the average velocity of a body is equal to its instantaneous velocity?
Question 20 :
Which of the following quantity remains constant in a uniform circular motion?<br>
Question 21 :
A ball is dropped from a height. If it takes $0.20 s$ to cover the last $6.00 m$ before hitting the ground. Find the height from which it was dropped. Take $g= 10\ { m }/{ { s }^{ 2 } } $.<br/>
Question 22 :
Assertion: Acceleration and displacement are in the opposite direction during retardation.
Reason: Acceleration is given as the change in velocity per unit time.
Question 23 :
The time taken by a body to slide down a smoothinclined plane is 4 sec. The time taken by the bodyto slide, the first 1/4th of the length of the plane is
Question 24 :
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 25 :
A ball is dropped downwards, after $1$ sec another ball is dropped downwards from the same point. What is the distance between them after $3$ sec? (Take $g=10ms^{-2}$)
Question 26 :
To test the quality of a tennis ball, you drop it onto the floor from a height of $4.00 m$. It rebounds to a height of $2.00 m$. If the ball is in contact with the floor for $12.0 ms$, what is its average acceleration during that contact? Take $g=10 \displaystyle m/s^{2}.$<br/>
Question 27 : <p>A particle is moving in $xy - plane$ in a circular path with center at the origin. If at an instant the position of the particle is given by $\frac{1}{{\sqrt 2 }}\left( {\hat i + \hat j} \right)$, then the velocity of the particle is along</p>
Question 28 :
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 29 :
A car, moving at 1.5 $m{s}^{-1}$ applies brakes and comes to rest in $2 s$. If the same car travels at double the speed, what time would it take to come to rest after applying brakes?
Question 30 :
A body slides on an inclined plane. If height of inclined plane is '$h$' and length is '$l$' and angle of inclination is $\theta$ then time is taken for travelling from upper points to lower point is
