vocab & units
speed
acceleration
momentum
potluck
100
this requires a change in position
What is motion
100
the difference between speed and velocity
What is velocity has direction
100
Acceleration measures a change in this
What is velocity over time
100
momentum is equal to this
What is mass x velociy
100
A vector quantity that measures how far and object travels
What is displacement
200
The units Km/hr measures this
What is speed
200
In 5 seconds, a ball rolls 10m. This is its average speed.
What is 2 m/s
200
To calculate acceleration you need to know time, final speed, and this
What is initial speed
200
Ball a has a mass of 5kg is rolling left at 4m/s. Ball B has a mass of 2kg is rolling right at 11m/s. This is the ball with more momentum.
What is ball B
200
A horizontal line on a distance vs time graph
What is no motion
300
The speed of an object at a specific given moment in time
What is instantaneous speed
300
If you walk 3 meters north, 2 meters west, 3 meters south, and 1 meter east, this is your displacement
What is 1 meter west
300
A ball is sitting on the floor. you push it and 6 seconds later its speed is 1.2 m/s. This is its acceleration.
What is 0.2 m/s/s
300
An object with momentum of 30kgxm/s east has a velocity of 5m/s. This is its mass.
What is 6kg
300
A horizontal line on a speed vs time graph
What is steady speed (no acceleration)
400
This is what is measured in Km/hr/s
What is acceleration
400
If a car travels at 100km/hr, this is the distance it will travel in 0.5 hr
What is 50km
400
A toy car is rolling at 5 m/s and 4 s later it is moving at 3m/s. This is its acceleration.
What is -0.5m/s/s
400
A person who is 40kg is sitting on a rolling chair. A friend who is also 40kg runs up and jumps on too. The second person's velocity is 2m/s north. This is the velocity of the chair with two passengers.
What is 1m/s
400
4 vector quantitites
What are velocity, displacement, acceleration, momentum
500
The tendency of an object to stay in motion
What is inertia
500
A car is traveling at 25 km/hr. This is how long it will take to go 150km
What is 6 hours
500
If an object is accelerating at 10m/s/s. It begins at a speed of 10m/s , after 5s this is its speed
What is 60m/s
500
A marble rolls towards another marble other at 2m/s. They hit and both marbles move. If the first marble is 8g and it is moving at 1m/s after the collision, this is the mass of the second marble rolling at a speed of 0.5m/s after the collision
What is 4g
500
the combined momentum of and object of and 4kg object moving west at 2m/s and an 1kg object moving east at 8m/s
What is 0
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