Which principle states that the total linear momentum of a system remains constant if no external forces act on it?
Question 2
What is the primary purpose of using a free-body diagram in dynamics problems?
Question 3
A block of mass $m = 5 \text{ kg}$ is pulled by a force $F = 20 \text{ N}$ on a frictionless horizontal surface. What is the acceleration of the block?
Question 4
Which of the following best describes a rigid body in dynamics?
