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Force, Motion, Dynamics, and Fluids CHAPTERS 11-13 REVIEW 1 A system of objects that are not moving with respect to one another. Used to determine the motion of an object. Frame of Reference 2 If you were measuring the length of a lunch tray you would most likely label it with the following unit. Centimeters (cm) 3 What would be the displacement in the following illustration. 4 km to the east. 4 What is the difference between speed and velocity? Velocity includes the direction and the speed. 5 If you were to determine your average speed for a trip to the grocery, what information would you need to do this calculation? Total Distance and Total Time. 6 What type of motion can be determined from the following graph? Constant low speed. 7 What is happening with this objects motion from point A to point B? The object is slowing down. 8 What is the only force acting on an object that is in free fall? Gravity (9.8 m/s2) 9 An object is said to accelerate if it has a change in either its ___________ or ______________. Speed or Direction. 10 In the formula for acceleration what does the variable Vi stand for? Initial Velocity. Acceleration = Vf – Vi / t 11 When a falling object reaches balanced forces between gravity and air resistance the object is said to have reached ________________. Terminal Velocity. 12 What does the following graph illustrate about the objects motion? Constant speed. 13 The following graph shows… Negative acceleration. 14 Any push or pull is considered a __________. Force. 15 Force is measured in what SI unit of measure? Newtons. (N) 16 If an object experiences an unbalanced force the object will __________________. Accelerate. 17 What is the net force acting on the object? 4 (N) to the right. 18 What force is acting in the opposite direction of the motion? Sliding Friction. 19 The type of friction that is the most difficult to overcome. Static Friction. 20 What force is acting in the opposite direction of gravity? Normal Force. 21 What is the shape produced by an object experiencing projectile motion? Parabola. 22 Newton’s 1st Law is often referred to as the Law of _____________. Inertia. 23 Newton’s 2nd Law of motion determines the force on an object is equal to multiplying the objects _____________ and _____________. Mass and Acceleration. 24 When traveling to the moon which measurement would change, mass or weight, and why? Weight, there is less gravity on the moon. 25 Which two objects would have the greatest gravitational pull? B (mass and distance) 26 What is the reaction force in the following illustration? Football hitting the foot. 27 Which object is experiencing the most pressure? C (increases with depth) 31 What University did Isaac Newton attend? Cambridge University. 28 What is the main purpose of a hydraulic system? Multiply Force. 29 The faster moving air on top of the wing creates what type of pressure? Lower Pressure. 30 What force is working in the opposite direction of gravity? Buoyancy. 32 A force is a magnitude that gives both ______________ and _____________. Magnitude and Direction.