Testbook Logo
Exams SuperCoaching Test Series Skill Academy
More
English
Hindi
Telugu
Bengali
Marathi
Tamil

Question

Download Solution PDF

What will be the velocity of an object of momentum 'P' and mass 'm'?

This question was previously asked in
RRC Group D Previous Year Paper 73 (Held On: 12 Nov 2018 Shift 3)
Download PDF Attempt Online
View all RRB Group D Papers >
  1. P × m 
  2. P + m 
  3. \(\frac{P}{m}\)
  4. \(\frac{m}{P}\)

Answer (Detailed Solution Below)

Option 3 : \(\frac{P}{m}\)
Free Tests
View all Free tests >
Free
RRB Group D Full Test 1
2.9 Lakh Users
100 Questions 100 Marks 90 Mins
Start Now

Detailed Solution

Download Solution PDF

The correct answer is P/m.

Key Points

  • Momentum refers to the quantity of motion that an object has.
    • If an object is in motion (on the move) then it has momentum. Momentum can be defined as "mass in motion."
    • All objects have mass.
  • So if an object is moving, then it has momentum - it has its mass in motion.
    • p = mv
    • So \(v = {p\over{m}}\)
      • p = momentum
      • m = mass
      • v = velocity
Download Solution PDF
Latest RRB Group D Updates

Last updated on Jun 2, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The RRB Group D Exam Date will be soon announce on the official website. Candidates can check it through here about the exam schedule, admit card, shift timings, exam patten and many more.

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a National Apprenticeship Certificate (NAC) granted by the NCVT.

-> This is an excellent opportunity for 10th-pass candidates with ITI qualifications as they are eligible for these posts.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

More The Angular Momentum Questions

Q1.S.I. unit of angular momentum is 
Q2.If a cyclist turns around a right angled corner at a speed of 16 feet/sec, making a turn in 0.8 seconds, then he must lean over at an angle of nearly ________.
Q3.Moment of inertia of a ring of mass M and Radius R about an axis passing through the center and perpendicular to its plane is I. The moment of inertia about its diameter is:
Q4.With reference to Fig. 7.6 of a cube of edge a and mass m, state whether the following are true or false. (O is the centre of the cube.)
Q5.Figure 7.4 shows two identical particles 1 and 2, each of mass m, moving in opposite directions with same speed v along parallel lines. At a particular instant, r1 and r2 are their respective position vectors drawn from point A which is in the plane of the parallel lines . Choose the correct options:
Q6.Choose the correct alternatives:
Q7.When a disc rotates with uniform angular velocity, which of the following is not true?
Q8.A particle of mass m is moving in yz-plane with a uniform velocity v with its trajectory running parallel to +ve y-axis and intersecting z-axis at z = a (Fig. 7.2). The change in its angular momentum about the origin as it bounces elastically from a wall at y = constant is:
Q9.A 250 gm stone is revolved at the end of 40 cm long string at the rate of 3 revolutions/sec. If after 20 sec it is making 1/2 revolution/sec then the rate of change of angular momentum will be:
Q10.A child is standing at the centre of a turntable with his arms stretched then the table is rotating about its central axis with angular speed ω0. Now the child folds his arms the moment of Inertia of the child becomes \(\frac{1}{3}\) of its initial value. Then the angular speed of the turntable will be:

More Rotational Motion Questions

Q1.A sphere of mass m and radius r << R is placed inside a rotating horizontal cylinder of radius R. As the cylinder's angular acceleration, β, gradually increases, find the maximum value of β that enables the sphere to reach from A to the horizontal point B.
Q2.The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpendicular to its length is I0. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is 
Q3.A sphere rolls down an inclined plane without slipping. What fraction of its total energy is rotational ?
Q4.Moment of inertia (M.I.) of four bodies, having same mass and radius, are reported as: I1 = M.I. of thin circular ring about its diameter, I2 = M.I. of circular disc about an axis perpendicular to disc and going through the centre, I3 = M.I. of solid cylinder about its axis and I4 = M.I. of solid sphere about its diameter. Then:
Q5.A bob of mass m is tied by a massless string whose other end portion is wound on a fly wheel (disc) of radius r and mass m. When released from the rest, the bob starts falling vertically. When it has covered a distance h, the angular speed of the wheel will be:
Q6.A satellite of mass m is launched vertically upward with an initial speed u from the surface of the earth. After it reaches height R(R = radius of earth), it ejects a rocket of mass m/10 so that subsequently the satellite moves in a circular orbit. The kinetic energy of the rocket is (G = gravitational constant; M is the mass of earth)
Q7.The radius of gyration of a uniform rod of length l about an axis passing through a point l/4 away from the center of the rod, and perpendicular to it, is
Q8.A solid cylinder and a solid sphere, having same mass M and radius R, roll down the same inclined plane from top without slipping. They start from rest. The ratio of velocity of the solid cylinder to that of the solid sphere, with which they reach the ground, will be
Q9.If the earth stops rotating, the value of 'g' at the equator will 
Q10.S.I. unit of angular momentum is 
Crack Super Subscription Model with
India's Super Teachers
Explore Supercoaching For FREE
Suggested Exams
Exam-Logo
UP Police Head Operator

UP Police Head Operator Important Links

More Physics Questions

Q1.What is the region around a magnet where the magnetic force is experienced known as?
Q2.What is the angle that is formed between the incident ray and the normal line called?
Q3.If the force acting on the body is zero, then its momentum is -
Q4.A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound gets reflected from a water surface, the wavelength of the reflected sound will be _______. (Speed of sound in air is 340 ms-1)
Q5.What is the SI unit of current?
Q6.Torque acting on electric dipole moment \(\overrightarrow{P}\) placed in uniform electric field \(\overrightarrow{E}\) is 
Q7.Demodulation is essential feature of a
Q8. If the particles are moving with same velocity, then maximum de-Broglie wavelength is for
Q9.Image formed by an objective of a compound microscope is
Q10.Which of the following has smallest wavelength
Important Exams
Super Coaching
Exams
Test Series
Previous Year Papers
Books
Objective Questions
Testbook Products & Resources for Students
Testbook USA
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
[email protected]
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Our Apps
Follow us on
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Get Free Access Now
Hot Links： teen patti all teen patti tiger teen patti real cash game teen patti game - 3patti poker