Mechanical Comprehension on SIFT Exam questions with correct answers

Inertia CORRECT ANSWER An object's tendency to resist a change in motion Force CORRECT ANSWER A push or a pull What is the unit of force? CORRECT ANSWER Newton Mass CORRECT ANSWER A measure of how much matter is in an object A measure of inertia of an object... An object with a larger mass will resist a change more. System CORRECT ANSWER A collection of particles or objects that is isolated from its surroundings. All forces within a system are called internal forces, and forces outside the system are called external forces. Newton's first law CORRECT ANSWER Law of Inertia An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Newton's second law CORRECT ANSWER F=ma Force equals mass times acceleration