First law of motion - class-XII
Description: first law of motion | |
Number of Questions: 58 | |
Created by: Vaibhav Pathak | |
Tags: newton's laws of motion momentum forces and motion motion and laws of motion force and motion force and laws of motion motion, force and work force and newton's laws of motion laws of motion force and newton's laws mechanics physics |
Physical independence of force is a consequence of
Mark the correct option
Consider the following statements
I) When a body is travelling with uniform speed, no force is acting on it.
II) When a body is travelling with constant velocity, no force is acting on it.
Which of the above statements is/are true?
Newton's law of motion cannot be applicable to the particle moving at a speed comparable to the speed of
Inertia of a body directly depends on its :
Choose the correct statement(s)
Hair of shaving brush cling together when it is removed from water due to
Which of the following Newton's law(s) is/are not applicable in non-inertial reference frame.
Is force needed to keep a moving body in motion? Which one of the Newton's laws follow this ?
A ball moving on a table top eventually stops. What is the reason ?
Which Newton's law is related to the Galileo's law of inertia ?
Object will remain at rest or in uniform motion in a straight line unless acted upon by an external force - which law is this ?
What is the force on a body of mass $m$ when it is moving with a constant velocity ?
An aeroplane of mass is moving uniformly at a constant height under the action of two forces (i) upward force (lift) and (ii) downward force (weight). What is the net force on the aeroplane.
The acceleration produced in a body by a force of given magnitude depends on:
State whether given statement is True or False.
An object moving on a frictionless horizontal surface should move with constant velocity
An object moving at constant velocity must:
Every body continues to be in its state of rest or of non-uniform motion in a straight line unless compelled by some external force to act otherwise. This is stated by:
If no net force acts on an object, then the velocity of the object:
If there are many forces acting on an object, it must have a non-zero net (unbalanced) force acting on it.
A ball is moving over a horizontal smooth surface with a constant velocity. Sum of external forces is:
State whether given statement is True or False.
Is it possible to move in a curved path in the absence of a force?
Consider a ball at rest in the middle of a toy wagon. When the wagon is pulled forward, the ball:
State whether given statement is True or False.
You fall in the forward direction when a moving bus applies brakes to stop, and fall backward when it accelerates from rest.
Change in the state of rest or of uniform motion is brought about by:
It is advised to tie any luggage kept on the roof of a bus with a rope because of :
A horse tied to a cart is standing stationary on road. Which of the following statement is CORRECT?
A coin flicked across a table will stop, because:
Which law of Newton defines an ‘inertial frame of reference’?
A particle is moving with a constant speed along a straight line path. A force is not required to:
Newton's first law of motion is also called Galileo's law of:
When a body is stationary :
Which law is involved in the act of cleaning a carpet by beating it with a stick ?
Idea of inertia came from:
Newton's law of motion were stated by the scientist named as Charles-Augustin
Why is it advised to tie any luggage kept on the roof of a bus with a rope?
The law that gives a qualitative definition of force is :
Which of the following equations or principle is most suitable to solve given question.
If no force acts on a body, then what will happen to it?
Physical independence of force is a con-sequence of 'X'. Identify 'X'.
When a bus suddenly takes a turn, the passengers are thrown outwards because of
Which Newton's law of motion defines force?
Newtons law are not valid in
A force vector applied on a mass is represented by $\vec {F} = 6\hat {i} - 8\hat {j} + 10\hat {k}$ and accelerates with $1\ m/s^{2}$. What is the mass of the body?
A force is not required to keep a body in a
Which of the following is different from others?
A rain drop of mass $0.1g$ is falling with uniform speed of $10{ cm/s }$. What is the net force the drop?
A car driver going at a speed v suddenly find a wide wall at a distance. (coefficient of friction is $\mu $)
Statement 1 : There can be displacement of an object even in the absence of any force acting on it.
Statement 2 : An object in uniform motion in a straight line shows displacement even when the net force acting on it is zero.
Newton's law of motion were published in the year 1699:
While dusting a carpet, we give it a sudden jerk or beat it with a stick because:
Physical independence of force is a consequence of:
A person sitting in an open car moving at constant velocity throws a ball vertically up into air. Where will the ball fall?
Who among the following anticipated Newton by declaring that all things gravitate to the earth?
Inertia is the property of a body which preserves its state of motion or uniform motion in a straight line. The following factors tell me about inertia.
I. Greater the mass of a body, greater is its inertia.
II. Greater the inertia of a body, the less will be the acceleration produced by a given force.
III. The law of inertia is the same as Newton's first law of motion.
Which combination is true?
A block is moved from rest through a distance of 4m along a straight line path.The mass of the block is 5 kg,and the force acting on it is 20 N.If the kinetic energy acquired by the block be 40J,at what angle to the path the force is acting: