Displacement in Two Dimensions

A dog searching for a bone walks 5.40 m north, then 9.10 m at an angle 30.0° west of north, and finally 5.8 m east. Find the dog's resultant displacement vector, using analytical techniques. 

• 13.54 m at 84.6° north of east
• 10.17 m at 18. 7° north of east
• 13.34 m at 84.6° north of east
• 3 m at 30° north of east

If you ride the bus to school and then ride it home which is greater?

• displacement
• distance
• no enough information
• the moon is the biggest

A duck swims across a river at a constant velocity of 4 m/s north. The current is going down stream at 8 m/s east. If the river is 40 meters across, how long will it take the duck to get to the other side? How far down stream is it? 

• 10.3 sec.
  83.1 meters 
• 8.90 sec. 
  70 meters 
• 9.85 sec. 
  78.5 meters
• 20.0 sec. 
  160 meters
   

Tags

NGSS.HS-PS2-1

A cannon shoots a cannon ball off the ground at an angle 67° north of east with an initial velocity of 1400 feet per second. Find the time the cannon hits the ground. 

• 40.27 s
• 90.15 s
• 2 s
• 80.54 s

Tags

NGSS.HS-PS2-1

A detective is searching for a dead body. He walks 6m north and then walked 5m at a angle of 40 degrees north of east. He then walks 17m west. Find the detective's displacement vector.

• he dose not move
• 16.07 at 35 degrees north of west
• 16.58m at 33.9 degrees north of west
• not enough information

You and your friend are both standing on a building while both holding a ball. Your friend drops the ball and you throw the ball horizontally. Which ball hits the ground first?

• The dropped ball 
• Both land at the same time
• The thrown ball 
• trick question. Neither ball landed because it was a dream!

Tags

NGSS.HS-PS2-4

A car enters an intersection at 20 m/s West where it collides with a truck heading North. The impact rotates the car 90 degrees and gives the car a speed of 15 m/s North. Determine the average velocity and direction if the car was in contact with the truck for 1.25 s.

• 25 m/s @ 37 deg. North of West
• 25 m/s @ 37 deg. West of North
• 25 m/s @ 37 deg. North of East
• 12 m/s @ 9 deg. South of East

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Vector A is 5.00 units east, vector B is 8.5 units at an angle 60° west of north, vector C is 7 units at an angle 80° south of east. Find the displacement vector and angle using graphical methods. 

• 1 unit at 1° north of south
• 4 units at 65° south of east
• 3.5 units at 25° south of west
• 3 units at 65° south of west

You travel 10 m N, then 20 m E, you wait 20 minutes, then go 40 m S, then 30 m W. You then go 30 m N, and finally you turn and go 10 m E. What's your total displacement and distance?

• Distance: 160 m; Displacement: 10 m
• Distance: 140 cm; Displacement: 0 m
• Distance: 12 m; Displacement: 140 m
• Distance: 140 m; Displacement: 0 m

Nick shines a laser at an airplane that is located 114° North of East. The laser travels a distance of 12345 meters. How high is the airplane in the air?

• 11978.3 m
• 5021.2 m
• cats
• 27727.3 m