Question 1 :
A loaded transport truck with a mass of 38000 kg is travelling at 1.20 m/s. What will be the velocity of a 1400 kg car if it has the same momentum?<br>
Question 2 :
You are thrown ahead when your car suddenly comes to a halt and you are thrown backwards when your car rapidly accelerates. Which law of Newton is involved in this?
Question 3 :
When a tree with a flexible stem is shaken vigorously,its fruits and leaves fall own.This phenomenon can be explained by making use of
Question 4 :
When a bus starts suddenly, the person falls backwards because of
Question 8 :
What is the momentum of an object of mass m, moving with a velocity v?<br>
Question 9 :
Why can dust be removed from a carpet by shaking it, or by beating it with a stick?
Question 10 :
A horse tied to a cart is standing stationary on road. Which of the following statement is CORRECT?
Question 11 :
A football has lesser inertia than a stone of the same size because:
Question 12 :
When the brakes are applied to bike the back seater moves forward why?<br>
Question 13 :
A football has lesser inertia than a stone of the same size because:
Question 14 :
Which of the following best describe about the statement " An object slides on a horizontal, frictionless surface".
Question 15 : Fill in the blank: <div>Tendency of an object to _____ a change in its state of rest or motion is called inertia<br/></div>
Question 16 :
A ball lying on the ground does not move on its own because:
Question 18 :
A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of $12 ms^{-1}$. If the mass of the ball is $0.15\ kg$, determine the change in momentum of the ball. (Assume linear motion of the ball)<br>
Question 20 :
Passengers standing in a bus are thrown outwards when the bus takes a sudden turn. This is due to:<br/>
Question 21 :
When no force acts on a body, it must be _______.
Question 24 :
A simple pendulum hangs from the roof of a moving train. The string is inclined towards the rear of the train. What is the nature of the motion of the train?
Question 25 :
A car of mass $600 kg$ is moving with a speed of $10 m s^{-1}$ while a scooter of mass $80 kg$ is moving with a speed of $50 m s^{-1}$. Compare their momentum.
Question 26 :
Why is it advised to tie any luggage kept on the roof of a bus with a rope?
Question 27 :
For ordinary terrestial experiments, which of the following observers below are inertial?
Question 29 :
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 to a stop because:<br/>
Question 30 :
A boy sitting on the top most berth in the compartment of a train which is just going to stop on a railway station, drops an apple aiming at the open hand of his brother sitting vertically below his hands at a distance of about $2 m$. The apple will fall:<br/>
Question 31 :
Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they <span>move with the same speed? </span>
Question 32 :
An object is thrown vertically upward with a non zero velocity. If gravity is turned off at the instant the object reaches the maximum height, what will happen?
Question 33 :
A particle moves along x-axis in such a way that its coordinate x varies with time t according to the expression, $x=2-5t+1.25t^2$. The initial velocity of the particle is?
Question 34 :
A boy sitting on the top most berth in the compartment of a train which is just going to stop on the railway station, drops an apple aiming at the open hand of his brother situated vertically below his hands at a distance of about $2 \ m$. The apple will fall
Question 35 :
An athlete runs some distance before taking a long jump, because:
Question 36 :
X and Y are two objects with masses $100\ kg$ and $75\ kg$ respectively, then :<br/>
Question 37 :
A body of mass $5\ kg$ is moving with a constant velocity of $18$ $m/s$ on a friction less horizontal surface. The force required to keep this body moving with the same velocity is
Question 38 :
A rider on horse falls back when horse starts running all of a sudden because
Question 39 :
While dusting a carpet, we give it a sudden jerk or beat it with a stick because: 
Question 40 :
A simple pendulum hangs from the roof of a moving train. The string is inclined towards the rear of the train. What is the nature of the motion of the train?
