2-D Vectors

What is the first thing you do when solving a vector problem?

• Draw the vectors, making sure they are the right size and in the correct direction
• Look at the equation sheet!
• Draw the vectors, always pointing to the right
• Just do the math, it's always so easy

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Can you combine vectors that aren't displacement?

• Yes
• Depends on what equation you use
• What? Two accelerations? I'M FREAKING OUT!!!

Tags

NGSS.HS-PS2-4

How do you combine vectors if they are in the same direction?

• Add
• Subtract
• Pythagorean Theorem
• SOHCAHTOA

How do you combine vectors if they are in opposite directions?

• Add
• Subtract
• Pythagorean Theorem
• SOHCAHTOA

How do you combine vectors if they are at a right angle to each other, and you know two sides?

• Multiply
• Divide
• Pythagorean Theorem
• SOHCAHTOA

How do you combine vectors if they are at a right angle to each other, and you know one side and an angle?

• Multiply
• Divide
• Pythagorean Theorem
• SOHCAHTOA

Remember: DRAW THE VECTORS!!!
A car travels 40 miles North, stops, then continues North for another 25 miles. How far did it go?

• 65 miles
• 15 miles
• 1,000 miles
• 1.6 miles

Remember: DRAW THE VECTORS!!!
A slug travels 3 cm, then turns around and goes 6 cm back to its slug cave. What is its displacement?

• -3 cm
• 9 cm
• 18 cm
• Slugs have caves?

Remember: DRAW THE VECTORS!!!
A plane is traveling at 100 m/s South when it encounters a cross-wind from Hurricane Irma of 78 m/s from the West.
What is the plane's resultant velocity?

• 126.82 m/s SW
• 1.28 m/s SW
• 7800 m/s SW
• 0.78 m/s SW

Remember: DRAW THE VECTORS!!!
A potato is launched 350 m at an angle of 42^o above the ground. How far up (vertical) and how far out (horizontal) did the potato travel?

• up = 234.20 m
  out = 260.10 m
• up = 0.669 m
  out = 0.743 m
• up = 14,700 m
  out = 8.33 m
• up = 308 m
  out = 392 m