SPEED
At exactly 2:00 pm, Tom pulls out of his driveway. He reaches Silverwood at 3:30 pm, 80 miles away from his house. What is his speed?
What is 53.3 mph
Give an example of a time when you'd use velocity instead of speed
weather events (tornado), pitching, a high speed chase, etc....
The typical SI unit for acceleration.
What is meters per second squared (m/s^2)
This is a push or a pull in a certain direction.
What is Force
Where is time located on a distance vs. time graph?
What is the x-axis
Bobby drives his car at a speed of 60 miles per hour for 4 hours. How far has he driven?
What is 240 mi?
A baseball is thrown a distance of 60 meters towards the catcher.What is its velocity if it takes 5 seconds to cover the distance?
What is 12m/s forward
Big Mike's truck accelerates from 0 m/s to 70 m/s in 5 seconds. What is the acceleration of Big Mike's truck?
What is 14 meters per second squared
This force opposes motion
What is friction
A roller coaster's velocity at the top of a hill is 13m/s. Two seconds later it reaches the bottom of the hill with a velocity of 157 m/s. What is the acceleration of the roller coaster?
What is 72 m/s^2
What is the formula used to solve for Speed?
What is speed = distance / time
How much time does it take for a bird flying at a velocity of 45 mph south to travel a distance of 180 miles?
What is 4 hrs
What are three conditions that can describe acceleration?
What is speeding up, slowing down, or turning
This type of friction is present when objects are touching, but not moving.
static friction
What does a flat line (no slope) represent on a distance vs. time graph?
What is the object is not moving
What does displacement measure?
Start point to end point in a straight line
Mrs. Joly travels from her house to St. Ignace, MI in 5 hours. She travels north for 300 miles. What is her average velocity?
What is 60 mi/h North
Pete the Penguin loves to sled down his favorite hill. If he hits a speed of 50 m/s after 5 seconds, what is his rate of acceleration?
What is 10 meters per second squared
Which is greater--rolling or sliding friction? WHY?
Sliding friction--there is more surface area in contact with another surface. So there is a greater area to oppose motion.
What does a negative slope represent on a velocity vs. time graph?
What is the object is slowing down
What is the difference between velocity and speed?
What is velocity includes the direction
How can an object have a negative velocity, when velocity is distance/time?
Velocity is a vector quantity, so it includes direction. If the distance is going back to the origin, it's velocity can be negative.
Toon Train is traveling at the speed of 10 m/s at the top of a hill. Five seconds later it reaches the bottom of the hill and is moving at 30 m/s. What is the rate of acceleration of Toon Train?
What is 4 meters per second squared
Give an example of a time when friction is helpful.
Any time you need to accelerate or slow down, batting gloves, running (cleats), etc....
What does a line negative slope mean on a distance vs. time graph?
The object is getting closer to the origin. (going back to where it came from)