Ch. 11.2 - Speed and Velocity

Ch. 11.2

Speed and Velocity

Fill in the Blank

Todd drives 55 miles in 1.4 hours. What is his average speed?

Round to a whole number. Include units in your answer.

Fill in the Blank

Liz is driving to Tuscon at 65 miles/hour. Tuscon is 275 miles away. How much time will it take her to get to Tuscon?

Round to a whole number. Include units in your answer.

Multiple Choice

The SI units for speed are

• m/s

• ft/s

• mi/hr

• km/hr

Open Ended

How is instantaneous speed different from average speed?

Multiple Choice

The equation used for calculating average speed is

• Total Time x Total Distance

• Total Time / Total Distance

• Total Distance / Total Time

• Total Distance x Total Time

Multiple Choice

True or False? You can determine how fast you were going at the midpoint of a trip by calculating your average speed for the entire trip.

• True

• False

Fill in the Blank

A student walked 1.5 km in 25 minutes, and then realizing he was late, ran the remaining 0.5 km in 5 minutes. Calculate his average speed on the way to school.

Round to 3 places after the decimal. Include units in your answer.

Fill in the Blank

The slope of a line on a distance-time graph represents _.

Multiple Choice

What is the slope of line A?

• 10 m/s

• 20 m/s

• 40 m/s

• 50 m/s

Multiple Choice

What is the slope of line B?

• 10 m/s

• 20 m/s

• 40 m/s

• 50 m/s

Open Ended

How do speed and velocity differ?

Multiple Select

Select each choice that describes a change in velocity.

• A moving object gains speed.

• A moving object changes direction.

• A moving object moves in a straight line at a constant speed.

• A moving object slows down.

Open Ended

How do velocities combine?

Fill in the Blank

A river flows at a velocity of 3 km/hr east relative to the riverbank. A boat moves upstream (west) at a velocity of 15 km/hr relative to the river. What is the velocity of the boat relative to the riverbank?

Include units of "km/hr" and direction in your answer.