Save
Busy. Please wait.
Log in with Clever
or

Don't have an account?  Sign up
Sign up using Clever
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.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
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

# Acceleration

QuestionAnswer
Acceleration is a vector quantity that represents the time-rate change in velocity
An airplane went from 100 m/s to 180 m/s in 2.0s. What was its acceleration? 40 m/s/s
If an object decreases its speed, then the vectors of velocity and acceleration __________. Opposite directions
If an object increases its speed, the the vectors of velocity and acceleration ____. Same directions
The initial speed of a bicycle at the top of a hill 3 m/s. The bicycle accelerates downhill at 1 m/s2 for 4.0 seconds. What is the bicyclist’s speed at the bottom of the hill? 7 m/s
What does the slope of a distance vs. time graph represent? speed
What does the slope of a velocity vs time graph represent? acceleration
What is the equation to find slope of a line? (y2-y1)/ (x2-x1)
What are the units for distance? meters
What are the units for time? seconds
what are the units for speed and velocity? m/s
What are the units for acceleration? m/s/s
What does the shape of an object speeding up look like on a distance vs time? a curve that gets steeper
What does the shape of an object slowing down look like on a distance time graph? a curve that gets less steep
What is the final velocity of a freely falling object 8 seconds after it is dropped? (g= -10m/s/s) -80 m/s
If you drop a bowling ball and coin at the same time in NASA's 8 story vacuum chamber (no air), which will hit the ground first? they hit at the same time
A ball is tossed straight up in the air. What is the speed of the ball when it's at its maximum height? 0m/s
A ball is tossed straight up in the air. What is the acceleration of the ball when it's at its maximum height? -9.8 m/s/s
During an experiment, an object is dropped from the sky and lands on earth but does not hit the earth at the calculated time. Why not? Air resistance inhibits the motion
When you drop an object, it accelerates downward because of ______________________. gravity
Gravitational attraction is lower on Mars than it is on Earth, therefore objects dropped on Mars would _______________. fall at a slower rate
A rock is thrown up with a velocity of 8 m/s. What is the rock’s velocity when it comes back down at the same height it was thrown? -8m/s
One characteristic of air resistance is ______________. opposes motion
How much velocity does a free falling object gain each second it falls down? 9.8 m/s
Created by: NISD Physics
Popular Physics sets

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