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# Team 1 Science Test

### Motion Unit Test (2/14)

TRUE OR FALSE?: Observers need to be in the same frame of reference to determine the motion of an object. Both observers need to agree that a certain point is not moving to compare the moving object to that point. True
A stationary point that allows observers to see motion because the distance between the object and stationary reference point changes. Reference Point
The distance traveled in a certain amount of time. "How fast" Speed
What is the formula for speed? Distance/time
What is the formula for distance? Speed*Time
What is the formula for time? Distance/speed
The speed at a certain instant of time. Instantaneous speed
Traveling equal distances in equal amounts of time. Constant speed
The total distance traveled in a certain amount of time. Average speed
The speed in a certain direction. "How fast and which way" Velocity
If Lauren can run 15m in 10sec, what is her speed? 1.5 m/s
How one variable changes in relation to another. Slope
What is the formula for slope? (y2-y1)/(x2-x1)
Covering equal distances in equal amounts of time without changing direction Constant velocity
Any change in velocity Acceleration
The three ways of __________ are speeding up, slowing down, and changing direction. Accelerating
What is the formula for acceleration? (Final velocity - Initial velocity)/ Time
What is the unit for acceleration? m/sec^2
A car accelerates from rest to a final speed of 10m/s in 5 sec. What is the acceleration of the car? 2 m/sec^2
A car speeds up from 10 m/s to 20 m/s in 4 sec. What is the acceleration of the car? 2.5 m/sec^2
A car slows down from a speed of 25 m/s to 10 m/s in 3 sec. What is the acceleration of the car? -5 m/sec^2
A car is traveling at 10 m/s. How much times will it take to accelerate to a final speed of 30 m/s if it can accelerate eat 4 m/sec^2? 5 sec
A car that is at rest begins to accelerate at 5 m/sec^2. What is the car's speed after 6 seconds? 30 m/s
A car that is traveling at 10 m/s begins to accelerate at 5 m/sec^2. What is the car's speed after 6 seconds? 40 m/s
A car accelerates from rest at 4 m/sec^2. Calculate the distance traveled and final velocity after 3 seconds. Distance: 18m Velocity: 12 m/s
If a distance vs time graph has a flat slope (horizontal line), then the object that is being graphed is ___ ______. Not moving
If a distance vs time graph has a slanted slope, then the object that is being graphed is moving at a ________ _____. Constant speed
If a distance vs time graph has a curved slope, then the object that is being graphed is ____________. Accelerating
If a velocity vs time graph has a flat slope (horizontal line), then the object that is being graphed is moving at a _______ _____. Constant speed
If a velocity vs time graph has a slanted slope, then the object that is being graphed is _____________. Accelerating
If an acceleration vs time graph has a slanted slope, then the object that is being graphed is moving at a _______ ____________. Constant acceleration
Created by: oliva.muchnik