A particle starts its motion from rest under the action of a constant force

A Particle Starts Its Motion From Rest Under The Action Physics Question

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is S₁ and that covered in the first 20 seconds is S₂, then:

Options

(a) S₂ = 3S₁
(b) S₂ = 4S₁
(c) S₂ = S₁
(d) S₂ = 2S₁

Correct Answer:

S₂ = 4S₁

Explanation:

u= 0, t₁= 10 s, t₂= 20 s Using the relation, S = ut + 1/2 at²
Acceleration being the same in two cases,
S₁ = 1/2 a x t₁² , S₂ = 1/2 a x t₂²
S₁ / S₂ = ( t₁ / t₂ )² = (10 / 20)² = 1/4
S₂ = 4S₁

Related Questions:

  1. The heat dissipated in a resistance can be obtained by measuring of resistance,
  2. If wavelength of a wave is λ=6000 Å, then wave number will be
  3. The voltage of clouds is 4×10⁶ volt with respect to ground. In a lightening
  4. A source is moving towards an observer with a speed of 20 m/s and having frequency
  5. A point charge q is placed at a distance x/2 directly above the centre of a cube

Topics: Motion in Straight Line (93)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*