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motion
motion review
| Question | Answer |
|---|---|
| What is velocity? | the speed of something in a given direction |
| What is speed? | distance traveled per unit of time |
| Explain displacement. | the moving of something from its original position |
| What is distance? | how much ground an object has traveled from its original position |
| Explain acceleration. Tell three ways an object can accelerate. | the rate of change of velocity of an object |
| Explain why deceleration is also acceleration. | because it's still a change in speed or direction |
| What does a flat line on a distance/time graph represent? | stopped |
| Greater slope up means ____________ on a distance/time graph. | constant speed away from starting position |
| Greater slope down means ____________ on a distance/time graph. | constant speed towards starting position |
| What does a flat line on a velocity/time graph represent? | it means cosntant speed |
| What does an upward slope on a velocity/time graph represent? | accelerating away from the starting point |
| What does a downward slope on a velocity/time graph represent? | it means deceleration or negative acceleration |
| What does constant velocity mean? | its traveling at the same distance every second |
| Tell three ways velocity can change. | slow down, speed up, or change direction |
| If an object’s mass increases, its acceleration will ______________. | decrease |
| Force = _________ x ____________ | mass, acceleration |
| What are unbalanced forces? | unequal forces that act on an object |
| What are balanced forces? | equal forces that act on an object in opposite directions |
| Net force = _______________ | the sum of all forces |
| What type of force does not cause acceleration? | balanced force |
| What is magnitude? | size of an object |
| What is vector? | has a size and quantity |
| Explain Newton’s First Law of Motion. | that an object in motion will stay in motion unless an unbalanced force acts upon it. and a body at rest will stay at rest unless an unbalanced force acts upon it. |
| Greater mass = __________ inertia | greater |
| Explain Newton’s Second Law of Motion. | that when a net force acts upon an object it will move in the direction of the net force |
| Explain Newton’s Third Law of Motion. | that every force and action has an opposite reaction |
| What is inertia? | property of matter that stays in rest or motion |
| What is another name for Newton’s First Law of Motion? | law of inertia |
| What does air resistance depend upon? | the speed of an abject and its surface area |
| What is the formula for velocity? | distance divided by time; distance/time |
| What is the difference between speed and velocity? | velocity is speed in a given direction while speed is the distance traveled per unit of time |
| What is the difference between mass and weight? | mass is the measure of how much matter is in an object ehile weight is the measure of gravity on an object |
| How does your mass on Earth compare to your mass on the moon? | there is no difference because mass stays the same |
| How does your weight on Earth compare to your weight on the moon? | your weight on the moon would be lighter because there is less gravity |
| Explain friction. How does it affect the movement of an object? | the resistance between two objects. and it slows them down |
| How does the mass of an object affect the amount of force needed to accelerate the object? | the greater the mass the more force is needed to act upon it |
| Explain how to solve a vector diagram (to determine a net force). | a vector is a force so two vectors working against eachother may cancell one another out |
Created by:
allison.g21
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