Name the laws involved in the following situations:
A. The sum of products of masses and velocities of two moving bodies before and after their collision remains the same.
B. A body of mass 5 kg can be accelerated more easily by a force than another body of mass 50 kg under similar conditions.
C. When person A standing on roller skates pushes another person B and makes him move to the right side, then the person A himself gets moved to the left side by an equal distance.
D. If there were no friction and no air resistance, then a moving bicycle would go on moving forever.
Answer:A
Name the laws involved in the following situations:
A. The sum of products of masses and velocities of two moving bodies before and after their collision remains the same. B. A body of mass 5 kg can be accelerated more easily by a force than another body of mass 50 kg under similar conditions. C. When person A standing on roller skates pushes another person B and makes him move to the right side, then the person A himself gets moved to the left side by an equal distance. D. If there were no friction and no air resistance, then a moving bicycle would go on moving forever.