Question 1 :
A body is said to be under balanced forces when the resultant force acting on the body is
Question 5 :
A tennis ball and a cricket ball, both are stationary. To start motion in them
Question 6 :
A man weighing 60 kg is walking with a uniform velocity of 4 m $s^{-1}$. Calculate the momentum of a man.
Question 7 :
The acceleration produced in a body by a force of given magnitude depends on:
Question 8 :
A book remains at rest on a table. It is so because of:
Question 9 :
______ of the body is a measure of inertia. Fill in the blanks.
Question 15 :
A vehicle is moving on a rough road in a straight line with uniform velocity. Then
Question 16 :
Two bodies A and B of same mass are moving with velocities $v$ and $2v$ respectively. What is the ratio of their momentum ?
Question 18 :
A man getting down from a running bus falls forward :<br/>
Question 19 :
Which of the following is the most significant law of motion given by Newton?
Question 20 :
A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?<br>
Question 21 :
<span>Which of the following class of forces is different from others?</span>
Question 22 :
A batsmen hits a sweep short in the game of cricket. What is the nature of force experienced by the ball during the impact?
Question 24 :
What would happen to a car traveling west at a constant velocity of 55 MPH without any influence of external force?<br/>
Question 26 :
Two bodies of masses 1m and 4m have the same KE. What is the ratio of their momenta?
Question 29 :
A man is pushing a car but it is not moving. Which of the following is correct about the situation?
Question 31 :
When a body is acted by a constant force, then which of the following quantities remain constant 
Question 32 :
A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows a stop because<br/>
Question 33 :
Which of these examples can be explained by Newtons first law of motion ?
Question 34 :
If a body is acted upon by a constant force then it will have a uniform _________.
Question 35 :
At the Earth, a block of mass $m$ which rest on the frictionless table,  let $F$ be the force required to produce acceleration $a$. Calculate the force at the Moon to produce same acceleration if  $g_{moon}$ is one sixth of $g_{earth}$.<span></span><span></span>
Question 36 :
Four alternatives are given to the following incomplete statement/question. Choose the right answer.<br/>If the forces acting on an object are balanced then 
Question 37 :
The net force on a rocket with a weight of $1.5\times 10^{4}N$ is $2.4 \times 10^{4}N$. About how much time is needed to increase the rocket's speed from $12 m/s$ to $36 m/s$ near the surface of the Earth at take off? (Take $g=10m/s^2$)<br/>
Question 38 :
A force  100 N acts in a body mass 2 kg for 10 s. The change in the velocity of the body is :<br/>
Question 39 :
If the momentum of a body is doubled, the kinetic energy is
Question 40 :
A rocket of mass 1000 kg is to be projected vertically upwards. The gases are exhausted vertically downwards with velocity $100\, ms ^{-1}$ with respect to the rocket. What is the minimum rate of burning of fuel, so as to just lift the rocket upwards against, the gravitational attraction? (Take $g= 10\, ms^{-2} $) :<br/>
Question 41 :
The mass of balloon and its contents is M. It is descending with an acceleration a. By how much the mass should be decreased, keeping the volume constant, so that the balloon starts ascending with the same acceleration?
Question 42 :
Use Newton's 2nd law of motion, find out the third missing quantity if mass and force on a body is given?
Question 43 :
What is the momentum of a 100000 kg truck whose velocity is 2 m/s?
Question 45 :
While dusting a carpet, we give a sudden jerk or beat with a stick because :<br>
Question 46 :
An $80\;\text{kg}$ person is parachuting and is experiencing a downward acceleration of $2.8\;\text{m/s}^2$. The mass of the parachute is $5\;\text{kg}$. The net force on the system (parachute+man) is (Take $\text{g=9.8 m/s}^2$):
Question 48 :
A ball of mass $0.2 \ kg$ is thrown vertically upwards by applying a force by hand. If the hand moves $0.2 \ m$ while applying the force and the ball goes upto $2 \ m$ height further, find the magnitude of force applied by the hand. Consider $g =10$ ${ ms }^{ -2 }$.
Question 50 :
Consider the following statements:<br/>(a) No net force acts on a rain drop falling vertically with a constant speed.<br/>(b) If net force acting on the body is zero, momentum of the body remains constant.<br/>(c) Particle of different masses falls with different acceleration on earth.<br/>(d) It is easier to start motion in a heavier body than a lighter body.<br/>Which of the above statements are correct?<br/>
