Save
or

or

taken

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

focusNode
Didn't know it?
click below

Knew it?
click below
Don't Know
Remaining cards (0)
Know
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

# Force and Motion

### Force and Motion Test Review

What is velocity? Speed + Direction
How do unbalanced forces affect the motion of an object? Objects will speed up, slow down, or change direction if unbalanced forces are acting on them.
There are 4 wagons. Each one has a different mass. If students pull the wagons with the same amount of force, which wagon will move the fastest? The one with the least amount of mass
Which of the following is an example of velocity? A. 100 m/s B. 100 m/s2 C. !00 m/s east D 100 m C
Think back to the video of the skydiver that we watched in class. During which parts of the fall were the forces balanced on the skydiver? When the forces of gravity and air resistance were equal and opposite (Balanced)
What is the net force on an object that has balanced forces acting on it? 0 Newtons
What unit is used to measure force? Newtons (N)
A car travels 40 miles in 30 minutes. What is the speed of the car in miles per hour? 80 mph
What is the difference between speed and velocity? Speed only tells you how fast something is moving. Velocity tells you speed and also gives you the direction of travel.
On a speed - time graph, what does a flat line represent? Constant Speed
On a speed - time graph what does a upwards slanted line represent? Acceleration - speeding up
On a speed - time graph, what does a line slanted down towards the x axis represent? Acceleration - slowing down
On a distance (position) - time graph what does a flat line represent? An object that is not moving
On a distance - time graph, what does a straight slanted line represent? Constant speed
On a distance - time graph, what does a line slanted down towards the x axis represent? Return to starting point
On a distance - time graph, what does the y-intercept represent? Where the object starts moving
What is acceleration? A change in velocity
How can you tell if an object is accelerating? If it is speeding up, slowing down, or changing direction it is accelerating
How is acceleration represented on a distance-time graph? A curved line (upwards for speeding up, downwards for slowing down)
What is a force? A push or a pull
What is the relationship between slope and speed? A steeper slope represents a faster speed
How do you calculate net force? If the forces are going in the same direction you add them, if they are going in opposite directions you subtract
What subatomic particle identifies an atom? proton
When looking at a bohr model of an atom, how do you determine the number of valence electrons? You count the electrons in the outer most shell
If 2 atoms are in the same period, what do they have in common? They have the same number of energy levels (shells) for their electrons
What determines the reactivity of an atom? The number of valence electrons
According to the law of conservation of mass, how does the mass of the reactants compare to the mass of the products? They are the same
Atoms in the same _______________ have similar properties. group/family
Created by: hgorman

Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

• SPACEBAR - flip the current card
• LEFT ARROW - move card to the Don't know pile
• RIGHT ARROW - move card to Know pile
• BACKSPACE - undo the previous action

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
 "Know" box contains: Time elapsed: Retries:
restart all cards