Test Practice
Velocity
The Joy of Acceleration
Formulating a Formula
Definitions
100
Jill drives 10km from her house to school and then drives back 5km towards her house and stops at the library. What is her total displacement?
What is 5km?
100
When you know the speed and direction of an object's motion you know the object's
What is velocity?
100
The rate at which velocity changes.
What is acceleration?
100
Final Speed - Initial Speed / Time =
What is the formula for acceleration?
100
The system of units use by scientists all over the world.
What is SI?
200
A suitable reference point is _________ in motion
What is not?
200
The rate at which velocity or speed changes is called
What is acceleration?
200
m/s2
What is the SI unit for acceleration?
200
Distance / Time
What is the formula for speed?
200
Helped the world to understand that the Earth revolves around the sun.
Who is Nicolaus Copernicus?
300
1 m = _______ cm
What is 100?
300
The _________ speed of an object's motion is found by dividing the total distance by the total time.
What is average speed?
300
A car is traveling down Brooks St. and the driver puts on the brakes. It takes 4 seconds to slow down from 36 m/s to 24 m/s. What is the cars acceleration?
What is 3 m/s2?
300
Total distance / total time =
What is average speed?
300
Mass / Volume =
What is density?
400
If two lines appear on the same motion graph, the line with the lower ____________ indicates a slower speed
What is slope?
400
The SI unit for speed is
What is m/s
400
A skier is traveling down the hill at 15 m/s. Ten seconds later the skier is going 20 m/s. What is the skiers acceleration?
What is 0.5 m/s2?
400
Speed x Time =
What is distance?
400
Which branch of science is the study of motion, velocity and acceleration under?
What is Physics?
500
A tree is _____ in motion relative to the Earth, where as a tree (on Earth) is _______ relative to the Sun?
What is stationary and in motion?
500
On a distance versus time graph, a straight line indicates that the object's speed is
What is constant?
500
The three ways an object can accelerate.
What is speeding up, slowing down or changing direction?
500
Represents the run when calculating a slope.
What is the x axis?
500
The star used by sailors of yore to navigate the sea?
What is the North Star?