CBSE 9 - Physics Asked by topperlearningforcontent | 31 Jan, 2022, 10:14: AM
CBSE 9 - Physics Asked by swatipuspapatel | 31 May, 2020, 12:23: PM ANSWERED BY EXPERT
CBSE 9 - Physics Asked by ujjwalsharma7667 | 28 Dec, 2019, 08:35: PM ANSWERED BY EXPERT The RRB Group D Results are expected to be out soon! The Railway Recruitment Board released the RRB Group D Answer Key on 14th October 2022. The candidates will be able to raise objections from 15th to 19th October 2022. The exam was conducted from 17th August to 11th October 2022. The RRB (Railway Recruitment Board) is conducting the RRB Group D exam to recruit various posts of Track Maintainer, Helper/Assistant in various technical departments like Electrical, Mechanical, S&T, etc. The selection process for these posts includes 4 phases- Computer Based Test Physical Efficiency Test, Document Verification, and Medical Test. Answer Hint: Velocity is defined as the rate of change of position of an object with respect to time. And the velocity is also defined as the amount of distance travelled by an object in a given amount of time. By using the velocity formula, the solution can be determined. Complete step by step solution Hence, the option (C) is correct. Note: The velocity of the object is doubled by changing the acceleration only. If the velocity is doubled its kinetic energy is multiplied by four times. And there is no relationship between the velocity and potential energy. So, if the velocity is doubled, momentum also doubles. |