OnlineCBT
Physics · LAWS OF MOTION
हिन्दीGiven below are statements regarding Newton's laws of motion: (A) If the net external force acting on a body is zero, its acceleration must be zero. (B) Any internal forces in a system of particles can alter the acceleration of the center of mass of the system. (C) Force is required to continuously change the direction of velocity even when the speed of a body remains constant. (D) Newton's second law is consistent with the first law when the net external force is set to zero. Choose the correct answer from the options given below:
Correct answer · Option 4
(A), (C) and (D) only
Explanation
Statements (A), (C), and (D) are correct. Statement (B) is false because internal forces cancel out in pairs and cannot accelerate the center of mass of a system.
