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Motion Review

Matter

QuestionAnswer
1. What is velocity? The speed of something in a given direction
2. What is speed? The distance an object travels per unit of time
3. Explain displacement. Distance and direction of an object's change in position from the starting point.
4. What is distance? The length of a path between two points or How far an object moves
5. Explain acceleration. Tell three ways an object can accelerate. the rate at which velocity changes Ex - change in velocity. Change in direction, or change in velocity and direction
6. Explain why deceleration is also acceleration. Because your changing in speed
7. What does a flat line on a distance/time graph represent? It means stop
8. Greater slope up means ____________ on a distance/time graph. Steady speed
9. Greater slope down means ____________ on a distance/time graph. Returning to stop
10. What does a flat line on a velocity/time graph represent? Steady speed
11. What does an upward slope on a velocity/time graph represent? acceleration
12. What does a downward slope on a velocity/time graph represent? deceleration
13. What does constant velocity mean? In a straight line in a constant speeds (can be positive or negative)
14. Tell three ways velocity can change. It can slow down, it can spped up, or it can change directions
15. If an object’s mass increases, its acceleration will ______________. decreases
16. Force = _________ x ____________ Mass times acceleration
17. What are unbalanced forces? When a force on an object is greater than another force acting on the same object
18. What are balanced forces? When two forces acting on an object are equal
19. Net force = _______________ Sum of all forces acting on a object
20. What type of force does not cause acceleration? velocity
21. What is magnitude? The great size or extent of something
22. What is vector? An object that has magnitude and direction
23. Explain Newton’s First Law of Motion. An object at rest stays at rest and an object in motionstays in motion with the same speed and in the same direction unless acted upon by an unbalanced force
24. Greater mass = __________ inertia greater
25. Explain Newton’s Second Law of Motion. Acceleration is dependent on two thing, first is when net force is actin on a object, and the second it the mass of an object
26. Explain Newton’s Third Law of Motion. For every action there is a equal and oppisite reaction
27. What is inertia? The resistance of the object to any change in it’s motion, also including change in direction
28. What is another name for Newton’s First Law of Motion? Law of inertia
29. What does air resistance depend upon? The speed of an object and it’s surface area
30. What is the formula for velocity? Distance divided by time
31. What is the difference between speed and velocity? Speed is how fast an object goes and velocity is how fast an object goes in a given direction
32. What is the difference between mass and weight? Weight is how heavy an object is due to the force of gravity, and mass is the amount of matter in an object
33. How does your mass on Earth compare to your mass on the moon? It is the same mass but the matter is constant
34. How does your weight on Earth compare to your weight on the moon? You weigh less on the moon because the gravity on the moon is not as strong to the gravity on the earth
35. Explain friction. How does it affect the movement of an object? It slows it down
36. How does the mass of an object affect the amount of force needed to accelerate the object? it ‘s heavier so it slows it down
37. Explain how to solve a vector diagram (to determine a net force). 1. Draw a quick sketch of the object. 2. Draw an arrow showing every force acting on the object. 3. To calculate the net force, add any vectors acting on the same axis (x and y), making sure to pay attention to the directions.
Created by: Aiden333
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