Standard+5+Part+2+Forces+and+Motion


 * Standard 5, Part 2: Essential Questions **

50) What is a force and what is its unit of measure? 51) What is the net force? 52) What is Newton’s First Law of Motion? 53) What is the Law of Inertia? 54) What is inertia? 55) What is a measure of an object’s inertia? 56) What is the impact of a large inertia? 57) What is the relationship between gravity and inertia? 58) What is the behavior of stationary objects in terms of inertia (absolutely and relatively speaking)? 59) What is the behavior of moving objects in terms of inertia (e.g., a car slowing down, speeding up, turning a corner, or compared to a Mack truck)? 60) Why don’t objects continue moving in our environment? 61) What is friction? 62) What would be the motion of an object in space (if it were given some initial velocity) over time?+ 63) What is Newton’s Second Law of Motion in verbal terms? 64) What is Newton’s Second Law of Motion in mathematical terms? 65) What are some descriptions of motion that involve acceleration? 66) What is air resistance? 67) Why are friction and air resistance often ignored in discussions of motion? 68) What is the relationship between net force and acceleration? 69) What is the relationship between mass and acceleration? 70) What doe the direction of a net force determine? 71) What happens if a net force is applied to an object at rest? An object moving in the same direction as the net force? An object moving in the opposite direction of the net force?++ 72) What is Newton’s Third law of Motion? 73) What is another common name for Newton’s Third Law of Motion? 74) How would you describe the motion of familiar objects in terms of Newton’s Third Law of Motion? a. A swimmer moving forward.  b. A ball thrown against a wall.  c. A person diving off a raft.  d. A person pushing against a wall.  75) What is an action/reaction pair? 76) What is an action force? 77) What is a reaction force?+++* 78) What is the definition of a newton (N)? 79) What is a derived unit? 80) What is a newton (N) in its base unit form? 81) How would you solve a problem for any variable in the formula F = ma? 82) What is the relationship between the variables in F = ma? 83) What is an applied force? 84) What is a frictional force? 85) What is a net force? 86) What is weight? 87) What factors determine the weight of an object? 88) How are weight and Newton’s Second Law of Motion related? 89) How would the weight of an object be calculated? 90) How would you solve weight problems (Fw = mag or w = mg)?* 91) What is Newton’s Law of Universal Gravitation? 92) What is subject to the Law of Universal Gravitation? 93) What determines the size of a gravitational force? 94) How does gravitational force influence Earth?**