Tag: force and newton's laws of motion

Questions Related to force and newton's laws of motion

When a running horse suddenly stops, the rider falls  _________.

physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

  1. forwards

  2. backwards

  3. to his right

  4. to the horse's right

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Correct Option: A
Explanation:

When horse stop suddenly rider falls due to inertia as when the horse is in motion rider also is in motion and when horse stop suddenly there is no external force acting on the ride to stop its motion therefore  rider falls forward.

Inertia means resistance to the change of state.

physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

  1. True

  2. False

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Correct Option: A
Explanation:

Yes inertia means resistance to the charge of state

Hence,
option $A$ is correct answer.

Inertia of a body is directly dependent on its: 

physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

  1. velocity

  2. volume

  3. mass

  4. all of the above

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Correct Option: C
Explanation:

If we see by Newton second law of motion.

  $F _{net}=ma$
$a=\frac{F}{m}$ 
a is depend on mass and is inversely proportional which state that the heavy object exhibit more inertia and they resist motion.

A coin tossed vertically by a passenger sitting in a train that is moving with a uniform velocity, still returns to his palm. This demonstrates the principle of.

physics force and newton's laws of motion inertia and mass concept of inertia galileo's law and inertia

  1. Inertia(Newton's First Law of Motion)

  2. Conservation of angular momentum

  3. Addition of velocities of the train and the coin

  4. Addition of forces due to gravity and the toss of the coin

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Correct Option: A
Explanation:

A coin tossed vertically by a passenger sitting in a train that is moving with a uniform velocity, still returns to his palm, it happens due to the phenomenon of inertia as the person and coin in his hand both are in uniform motion with the train.

Physical independence of force is a consequence of 

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. First law of motion

  2. Second law of motion

  3. Third law of motion

  4. All of these laws

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Correct Option: A
Explanation:

Physical independence of force is a consequence of first law of motion.

Mark the correct option

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. The state of motion of an object is described by its speed only

  2. Many a time application of force does not result in a change in the state of motion of an object

  3. By sitting on a bicycle seat force is applied to the spring fixed to the seat of a bicycle

  4. All of the above

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Correct Option: D
Explanation:
$(i)$ option $A$ is correct, as if to know about the unifomity of a motion and the body is moving or not speed is used as the parameter
$(ii)$Option B is correct, as the acceleration of a body depends on the net force a applied not on single $10r$ individual forces.
$(iii)$ Option $C$ is correct, while sifting on the bicycle, the spring force allached to the seat balances weight.
Option $D$ 

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?

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. only I

  2. only II

  3. both I and II

  4. neither I nor II

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Correct Option: A

Newton's law of motion cannot be applicable to the particle moving at a speed comparable to the speed of

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. $Light$

  2. $Sound$

  3. $Rocket$

  4. $Bullet train$

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Correct Option: A
Explanation:

Newton's law of motion are applicable for matter which occupy some space and have some mass. It is not possible for any matter to travel with speed of light. Secondly the mass charges as the speed approaches speed of light. Newton's law is applicable only when mass is constant so light is correct option.

Inertia of a body directly depends on its :

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. Velocity

  2. Mass

  3. Area

  4. None of the above

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Correct Option: B
Explanation:

Inertia of body directly depends on its mass.

The correct option is B. 

Choose the correct statement(s)

physics force and newton's laws of motion first law of motion newton's first law of motion momentum and newton's laws

  1. Motion necessarily takes place along the direction of force

  2. If no force acts, the body is at rest

  3. A body in motion, need not be acted upon by a force

  4. A change in speed is always there, whenever a force is applied on the moving body

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Correct Option: C
Explanation:

Motion always takes place along velocity of the body.So it does not necessarily takes place along the direction of force.
When a body moves with uniform velocity , there is no force acting on the body. So option B is incorrect and C is correct.
We know that magnetic force does not do work. It can change the direction of motion but never change the speed. So option D is incorrect.