Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
motion review
| Question | Answer |
|---|---|
| What is velocity? | speed in a given direction |
| What is speed? | the measure of distance traveled per unit |
| Explain displacement. | the change in position from an object's original location, so it is moving an object from one place to a different place |
| What is distance? | the amount of ground an object has covered during its motion |
| Explain acceleration. Tell three ways an object can accelerate. | the rate of change in an objects velocity or speed. Three ways an object can accelerate is positive acceleration (increase in velocity), negative acceleration (decrease in velocity), and zero acceleration (constant speed). |
| Explain why deceleration is also acceleration. | Deceleration is also acceleration is because it is a changing in velocity or speed. It is decreasing which is still changing. |
| What does a flat line on a distance/time graph represent? | a flat line represents the object being stopped, while time passes |
| 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 back towards the starting position |
| What does a flat line on a velocity/time graph represent? | a constant speed |
| What does an upward slope on a velocity/time graph represent? | acceleration away from starting position |
| What does a downward slope on a velocity/time graph represent? | slowing down ; deceleration, negative acceleration |
| What does constant velocity mean? | it means that the objects speed and direction have NOT changed |
| If an object’s mass increases, its acceleration will ______________. | change |
| Force = _________ x ____________ | Force = MASS x 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 = _______________ | Net force = THE SUM OF ALL FORCES ACTING ON AN OBJECT |
| What type of force does not cause acceleration? | balanced force |
| What is magnitude? | the size of a force |
| What is vector? | the direction of a force |
| Explain Newton’s First Law of Motion. | A body in motion is likely to stay in motion, and a body at rest will stay at rest unless an unbalanced force acts upon it. |
| Greater mass = __________ inertia | Greater mass = GREATER inertia |
| Explain Newton’s Second Law of Motion. | When a net force acts on an object, the object will accelerate in the direction of this net force. The greater the mass, the smaller the acceleration. Air resistance is the force of air that pushes against an object moving through the air. |
| Explain Newton’s Third Law of Motion. | For every force or action an equal and opposite reaction |
| What is inertia? | the tendency to resist change |
| What is another name for Newton’s First Law of Motion? | Law of Inertia |
| What does air resistance depend upon? | it depends on size, shape, speed, and surface area of the falling object |
| What is the formula for velocity? | distance/time |
| What is the difference between speed and velocity? | Velocity is about speed and DIRECTION and speed is the measure of distance traveled per unit of time with no given direction |
| What is the difference between mass and weight? | mass is everything, all matter, inside your body, while weight is the force applied by the gravity on an object. An example is weight is different on the moon but mass is the same |
| How does your mass on Earth compare to your mass on the moon? | mass on the moon is the same as the mass on earth |
| How does your weight on Earth compare to your weight on the moon? | Your weight on the moon is 9.8 times heavier than on the earth. (Ex. Weight on Earth - 145 lbs / Weight on the Moon - 646 lbs) |
| Explain friction. How does it affect the movement of an object? | Friction is when an object rubs against a surface or another object. It affects movement because it slows them down. |
| How does the mass of an object affect the amount of force needed to accelerate the object? | If an object's mass increases, its acceleration will change |
| Explain how to solve a vector diagram (to determine a net force). | add all the forces together to get the sum |
Created by:
agf356