Vectors

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  

• 40 metres, South
• 50 metres, South
• 50 metres, North
• 40 metres, North 

Which statement describes a vector?

• It has magnitude but no direction
• It has direction but no magnitude
• It has both direction and magnitude
• It has constant magnitude but no
   direction

Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west

• Scalar
• Vector

If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?

• 20m
• 40m
• 0m
• -20m

A car moved 60 km East and 90 km West. What is the distance it traveled?

• 30 km, West
• 60 km. East
• 90 km
• 150 km

If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?

• 12 km
• 19 km, East
• 31 km
• 43 km, East

A person observes a fireworks display from a safe distance of 0.750 kilometer. Assuming that sound travels at 340 meters per second in air, what is the time between the person seeing and hearing a fireworks explosion?

• 0.453 s
• 2.21 s
• 410 s
• 255,000 s

A child walks 5 meters north, then 4 meters east, and finally 2 meters south. What is the magnitude of the resultant displacement of the child after the entire walk?

• 1.0 m
• 5.0 m
• 3.0 m
• 11.0 m

An airplane traveling north at 220 meters per second encounters a 50.0-meters-per-second crosswind from west to east. 

• 170 m/s
• 214 m/s
• 226 m/s
• 270 m/s

Tags

NGSS.HS-PS2-1

A hiker walks 5 kilometers due north and then 7 kilometers due east.

• 2 km
• 8.6 km
• 12 km
• 12.6 km