1) Define Inertia. a) An objects tendency to resist change in motion. b) The speed in which an object is traveling. c) The measure of the force of gravity on an object. d) The product of a force and the distance through which it acts. 2) Define mass. a) The weight of an object. b) The measure of the amount of matter in a body. The mass of a body determines how much it will accelerate when unbalanced forces act on it and how much it weighs at Earths surface. In the metric system, mass is measured in kilograms and grams. c) A group of objects. d) If the forces on an object are balanced, the object will stay at rest or continue moving in the same direction at the same speed. 3) Define force. a) It only speeds up objects. b) It can only be applied by one's hand. c) It only slows down objects. d) A push or a pull between objects. 4) Define acceleration a) The distance an object travels divided by the time of travel. b) The speed at which an object is traveling in a direction. c) The rate at which an object changes speed or acceleration. d) Any factor that could affect the results of an experiment. 5) What does Newtons second law say? a) Acceleration (changing speed or direction) happens when a force acts on a mass (object). b) An object in motion will stay in motion unless acted upon by a force. An object as rest will stay at rest unless acted upon by a force. 6) Define velocity. a) The speed an object is traveling. b) The direction an object is traveling. c) Speed an object is traveling in a direction. d) How slow an object travels. 7) A 5 kg skateboard accelerates at 2 m/s2. What is the force applied? a) 10 N b) 7N 8) A force of 20 N causes an object to accelerate at 4m/s2 . What is the mass of the object? a) 80 kg b) 5 kg 9)  A 10kg box is pushed with a force of 50N. What is its acceleration? a) 500m/s2 b) 5m/s2 10) A 3kg toy car accelerates at 6m/s2. What force is required to make it accelerate? a) 18N b) 2N

Newtons Second Law

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