Speed and Velocity Equations.

An airplane travels from St. Louis, Missouri to Portland, Oregon in 4.33 hours. If the distance traveled is

2,742 kilometers, what is the airplane's average speed?

• 600 km/hr

• 700 km/hr

• 633 km/hr

• 680 km/hr

Joaquin mows the lawn at his grandmother's home during the summer months. Joaquin measured the

distance across his grandmother's lawn as 11.5 meters.

a. If Joaquin mows one length across the lawn from east to west in 7.10 seconds, then what is the velocity of the lawnmower?

• v = 1.62 West

• v = 1.62 East

• v = 2.17 West

• v = 2.17 East

How much time would it take for an airplane to reach its destination if it traveled at an average speed of

790 kilometers/hour for a distance of 4,700 kilometers?

• 5 hrs

• 10 hrs

• 7 hrs

• 6 hrs

A family drives 881 miles from Houston, Texas to Santa Fe, New Mexico for vacation. How long will it take

the family to reach their destination if they travel at a velocity of 55.0 miles per hour, northwest?

• 12 hrs Northwest

• 15 hrs

• 16 hrs

• 20 hrs

Katie and her best friend Liam play tennis every Saturday morning. When Katie serves the ball to Liam, it travels 9.5 meters south in 2.1 seconds.

A. What is the velocity of the tennis ball?

B. If the tennis ball travels at constant speed, what is its velocity when Liam returns Katie's serve?

• 4.32 m/s

• 4.32 m/s South, 4.32 m/s North

• 4.52 m/s South, 4.52 m/s North

• 4.52 m/s North, 4.53 m/s South

A driver realizes that she is traveling in the wrong direction on a one-way street. She has already driven

3.5 meters at a velocity of 16 meters per second, east before deciding to make a U-turn. How long did it take for the driver to realize her error?

• 0.22 sec

• 0.22 m North

• 0.22 m/s

• 0.22

A girl scout troop hiked 5.8 kilometers southeast in 1.5 hours.What was the troop's velocity?

• 3.87 mph southeast

• 4.12 mph southeast

• 4.12 km/hr southeast

• 3.87 km/hr southeast

A volcanologist noted that a lahar rushed down a mountain at 32.2 kilometers per hour, south. How far did

the mud flow in 17.5 minutes? (Hint: There are 60 minutes in an hour)

• 7.81 km

• 9.39 km

• 9.39 miles

• 7.81 miles

How much time would it take for the sound of thunder to travel 1,500 meters if sound travels at a speed of 330 m/s?

• 10.0 s

• 9.5 s

• 4.5 s

• 7.5 s

What is the starting point used to describe the position of an object?

• Beginning point
• Ending point
• Reference point
• positive