8.1 Mastery Check

How do you calculate average speed?

• distance divided by time

• time divided by speed

• speed divided by time

• total distance divided by total time

Which of the following answer choices is NOT a measuring unit for speed?

• miles per hour

• miles per hour per hour

• kilometers per hour

• meters per second

A car travels 120 miles in 12 hours. What is the car's speed?

• 10 mph

• 10 m/s

• 240 mph

• 240 m/s

A train travels 225 kilometers in 2.5 hours. Calculate the train's speed.

• 95 mph

• 90 km/h

• 90 h/km

• 90 m/s

Speed in a given direction

• acceleration

• speed

• velocity

• average speed

What is the difference between the velocity and the speed of an object?

• Velocity is the change in distance over time, while speed is the change

  velocity over time.

• Velocity has a direction associated with it, while speed has no specific

  direction.

• Velocity has no direction associated with it, while speed has a specific

  direction.

• Velocity is the change in speed over time, while speed is the change in

  distance over time.

Change in speed or velocity over a specific amount of time

• acceleration

• velocity

• average speed

• speed

According to the graph how far does the person travel in the first 5 seconds?

• 2 m
• 10 m
• 0 m
• 5 m

65mi/hr South is an example of...

• Speed
• Velocity
• Acceleration
• Direction

Describe the speed of the object from 4-6 seconds using the distance vs. time graph.

• Increasing speed
• Decreasing speed
• Not moving
• Constant speed

Tags

NGSS.MS-PS3-1