Units
What is the unit most commonly used in the metric system to measure distance?
meters
Acceleration is any change in...
Motion
True or False: Speed and velocity are the same thing.
False
Speed: If a car travels 400m in 20 seconds how fast is it going?
20 m/s
What fruit do we traditionally carve for Halloween?
Pumpkin
What is the unit most commonly used in the metric system to measure weight?
grams
True or False: Acceleration can be speeding up, slowing down, or changing direction.
True
True or False: When we calculate speed, it's not important to include direction.
true
Velocity: You arrive in my class 45 seconds after leaving math which is 90 meters away North. What was your velocity?
2 m/s North
In the movie "The Nightmare Before Christmas," what is the name of the Pumpkin King?
Jack Skellington
What is the unit most commonly used in the metric system to measure volume?
liters
What is the formula for acceleration?
a = Vf - Vi / t
What is the formula for speed?
s = d / t
Acceleration: A car steadily increases speed and every 5 seconds, its velocity changes by 40 kilometers per hour. What is the acceleration?
8 m/s2
Which country celebrates “Dia de los Muertos” instead of Halloween?
Mexico
what is the unit most commonly used for speed and velocity?
meters per second (m/s)
Acceleration in the negative direction, or backwards, is called...
deceleration
True or False: Speed is a vector, meaning it has a numerical size and a direction.
False
A helicopter’s speed increases from 25 m/s to 60 m/s in 5 seconds. What is the acceleration of this helicopter?
7 m/s2
Which Halloween candy is the most popular in the United States?
Reese's Peanut Butter Cups
What is the most common unit used for acceleration?
meters per second squared m/s2
What does it mean for acceleration to be a "vector" quantity?
A. It means acceleration is always negative.
B. It means acceleration has a size and a direction.
C. It means acceleration is always changing.
D. It means acceleration is always positive.
B. It means acceleration has a size and a direction.
What is the key difference between speed and velocity?
Velocity = speed + direction
A person throws a ball straight up into the air. The ball leaves their hand with an initial velocity of 15 m/s. After 3 seconds, the ball's velocity decreases to 0 m/s as it reaches its highest point. What is the ball’s acceleration?
-5 m/s2
What was the original vegetable used to carve jack-o'-lanterns before pumpkins?
turnips