Suzy travels a distance of 5 km to the east, she then immediately backtracks and travels 2 km to the west. What is Suzy's displacement?
3 km east
A car slows as it approaches a stop sign. This would be an example of ____________________ .
Negative Acceleration
Billy runs 300 m in a time of 40 s. Billy had an average speed of _______
7.5 m/s
What is the SI Unit for Distance
m or meters
According to the graph, which letter indicates Ruth stopping for 10 minutes to speak to a friend?
B
How can you tell an object has moved?
Reference Point
_______________________ is the rate of change of velocity.
Acceleration
A high speed train is traveling at a speed (velocity) of 210 km/h. If the train maintains this for 5.5 h, what distance will the train travel?
1,155 km
What is the SI Unit for Speed
m/s
According to the graph, which letter represents when Ruth is moving at a constant speed of 80 m/min?
A
In your best words, define distance
How far an object has moved
A car increases its speed to pass another car. This is an example of ________________________.
Positive Acceleration
A cross country runner takes 25 min to run a distance of 5 km. What is her average speed (velocity)?
0.2km/min
What is the SI Unit for acceleration?
m/s2
According to the graph, which letter shows Ruth jogged for 600 m in a time of 5 minutes?
C
In your best words, define displacement
How far out of place an object is, or how far it is from its starting point
A car is traveling at a velocity of 20 m/s. It then increases its velocity to 70 m/s over a time period of 5 s. What is the acceleration of the car?
10 m/s2
A boy is walking down the sidewalk at an average speed of 3 m/s. How much time will it take him to walk a distance of 900 m to the store?
300 s
What is the SI Unit for time?
s or seconds
Velocity of an object includes both ______________ and ________________.
Speed and Direction
What is a point of reference?
Is a place or object used for comparison to determine if something is in motion. It shows that an object is in motion. The POR is a nonmoving or stationary object.
Find the acceleration of a car that goes from 15 m/s to 90 m/s in a time of 5 s.
15 m/s2
What is the formula for speed
What is the SI Unit for velocity?
m/s
How do you know an object is in motion?
if it is changing position, or if it has changed its distance from a stationary reference point