Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What is force?
|
A push of pull that causes a changing motion.
|
Shauya what to wall?
What to open classroom door? |
|
|
What type of force is needed to move objects with more mass, compared to objects with less mass?
|
Friction
|
You run past an object.
|
|
|
What is inertia?
|
The tendency to keep something in a straight line.
|
Pencil
|
|
|
What does it take to change an object's state of motion?
|
Force
|
p of p
|
|
|
What is friction?
|
A force of an object that one object moves past another.
|
Swish!
|
|
|
If friction is taken away, what happens to an object's motion?
|
No force is needed to maintain motion at a steady rate.
|
Steady
|
|
|
What is Newton's First Law Of Motion (also known as the law of inertia)?
|
It tells us that the state of motion of an object does not change until a force is applied to it.
|
.....until f.... is applied to it.
|
|
|
What is position?
|
The location of an object.
|
L....... of O.....
|
|
|
What is speed?
|
How fast an object's motion changes.
|
1.32 sec
|
|
|
What is the formula for finding speed?
|
By dividing the distance by the time.
|
d by t
|
|
|
What is velocity?
|
The spped AND direction of a moving object.
|
AND
|
|
|
What is the only way two objects can have the same velocity?
|
If the spped and the direction is the same.
|
AND
|
|
|
How is velocity different from speed?
|
Velocity is objects going the same spped and the same direction and speed is the time of how fast an object's position moves.
|
velocity speed
|
|
|
What does Newton't First Law tell us about an object's velocity?
|
An object's velocity will remain the same unless force is applied to it.
|
What will remain the same?
|
|
|
What is a change in velocity called?
|
Acceleration
|
A...
|
|
|
What is deceleration?
|
It occurs when a force causes the speed of an object to increase.
|
Occures when force causes what to what?
|
|
|
When a gas-powered model airplane is flying in a circle, does it have a constant velocity? Why?
|
Yes, without the strings, the model will go straight but with strings, it changes direction.
|
Yes
|
|
|
If the plane broke off its strings, what would happen? Why?
|
It will go in a straight line because it has velocity and velocity is the same spped and the same direction.
|
Straight line
|
|
|
Why is a force needed to keep things moving in a circle?
|
A force is needed to keep things moving ina circle because like the pull of gravity, if there was no force, Earth would go flying off in a straight line.
|
Gravity and Earth
|
