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# Science topics

## Speed and Velocity

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## Which best defines the relationship between speed and velocity?

Velocity
Velocity is speed with displacement.
45 m/s north
a 5 mile course from the center of town heading north to the outskirts of town

## _ is the displacement of an object during a specific unit of time.

Velocity
5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.
None of these
45 m/s north

m/s
mph
km/h
All of these

55 m/s north
70 m/s north
45 m/s north
none of these

the direction
the speed
the motion
all of these

## Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest. Which best describes her numbers?

5.7 km/h north and 5.8 km/h west are instantaneous velocities, while 8.1 km/h northwest is the average velocity.
a 5 mile course from the center of town heading north to the outskirts of town
Both require time, but velocity requires displacement and speed requires distance.
Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displaceme

## Which explains the information needed to calculate speed and velocity?

Both require time, but velocity requires displacement and speed requires distance.
m/s km/h mph
the direction
displacement in the opposite direction.

## Greg is in a bike race. At mile marker four (out of ten), his speed was measured at 13.5 mph. Which best describes the measured number?

Displacement of bike rider
It is the instantaneous speed of the bike rider.
Motion of bike rider
none of above

## The chart indicates the time, speed, and velocity of five runners. Which best describes the runners?

while 8.1 km/h northwest is the average velocity.
all of these
Garreth and Elisa ran together, Luigi and Jasmine went the same distance, and Logan and Jasmine have the same displaceme
Velocity is speed with displacement.

30km/h
22km/h
15km/h
25km/h