Tag: newton's first law of motion

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Questions Related to newton's first law of motion

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

State whether given statement is True or False.
Is it possible to move in a curved path in the absence of a force?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Any curve path can be assumed as summation if small circular arcs  of different radii. For a path to move at circular arc, there must be some force to provide it centripetal force to remain it in circular path. It is not possible to have motion along curved path without any force.

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

Consider a ball at rest in the middle of a toy wagon. When the wagon is pulled forward, the ball:

  1. Rolls forward

  2. Stays stationary

  3. Rolls sidewards

  4. Rolls backwards
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The relative motion between ball and toy wagon is zero before being pulled. As the wagon is pulled, the inertia of ball causes ball to maintain its state of rest, so the ball rolls backwards when wagon is moved in forward direction.

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

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.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a moving bus, passengers are in motion along with bus. When brakesare applied to stop a moving bus, bus comes in the position of rest. But because of tendency to be in the motion a person falls in forward direction.Similarly, when a bus is accelerated from rest, the tendency to be in rest, a person in the bus falls backwards.

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

It is advised to tie any luggage kept on the roof of a bus with a rope because of :

  1. Newtons first law

  2. Newtons second law

  3. Newtons third law

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Luggage kept on the roof of a bus has the tendency to maintain its state of rest when bus is in rest and to maintain the state of motion when bus is in motion according to Newtons First Law of Motion. When bus will come in motion from its state of rest, in order to maintain the position of rest, luggage kept over its roof may fall down(backward). Similarly, when a moving bus will come in the state of rest or there is any sudden change in velocity because of applying of brake, luggage may fall down(forward) because of its tendency to remain in the state of motion.
This is the cause that it is advised to tie any luggage kept on the roof a bus with a rope so that luggage can be prevented from falling down.

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

A horse tied to a cart is standing stationary on road. Which of the following statement is CORRECT?

  1. Horse is applying force on the cart

  2. Cart is applying force on the horse

  3. Force applied by the horse is balanced by the force applied by the cart

  4. No forward force is being applied by the horse or the cart
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The horse tied to cart is standing stationary on road denotes that the net force acting on the horse as well as the cart individually is zero. If it is standing stationary, it means that horse is applying force on the road perpendicularly and road is also applying same magnitude of force in the opposite direction, which makes the net force on horse to be zero and hence no forward force on the horse is there.

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

Which law of Newton defines an ‘inertial frame of reference’?

  1. First law of motion

  2. Second law of motion

  3. Third law of motion

  4. Law of gravitation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

First Law of Newton states that when viewed in an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity unless acted upon by an external force.

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

A particle is moving with a constant speed along a straight line path. A force is not required to:

  1. Increase its speed

  2. Decrease its momentum

  3. Change the direction

  4. Keep it moving with uniform velocity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Newton's first law of motion states that if an object experiences no net force, then its velocity is constant. So, force is not required to keep object moving with uniform velocity.