Careers360 Logo
How Many Days Left for NEET 2025? - Countdown NEET 2025

Newton’s First Law Of Motion MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

Quick Facts

  • Newton’s First law of motion is considered one of the most asked concept.

  • 4 Questions around this concept.

Solve by difficulty

Two block of masses m1=5/3kg and m2=5 kg are released from rest on a frictionless inclined plane as shown in fig then

A block is kept on a frictionless inclined surface with an angle of inclination \alpha. The incline is given an acceleration to keep the block stationary. then a is equal to

 

Concepts Covered - 1

Newton’s First law of motion

Newton’s 1st law of motion states that if the (vector) sum of all the forces acting on a particle is zero, then and only then does the particle remain unaccelerated, i.e., remains at rest or moves with constant velocity.

  • If Fnet=0anet=0 forces in all directions are zero, i.e,

    Fx=0,Fy=0,Fz=0
     

  • Newton’s first law is also called the law of inertia.

  • Newton’s laws are valid in an inertial frame of reference but are not valid in a non-inertial frame of reference.

                          Frame of reference

  • A frame of reference is one in which the observer makes his observation.

  • Types of frame of reference:

  1. Inertial frame of reference- A frame that is at rest or moving with uniform velocity along a

                                   straight line.

                                Example- 1. Car moving with velocity v=constant

                                                 2. Lift at rest.

                          2.  A non-inertial frame of reference- a frame that is accelerated and does not have a constant velocity.

                               Example- 1. The frame travels in a straight line but speeds up or slows down.

                                               2. The frame travels along a curved path.

Study it with Videos

Newton’s First law of motion

"Stay in the loop. Receive exam news, study resources, and expert advice!"

Get Answer to all your questions

Back to top