Physics 6B - Review for 2D test

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

• Add
• Subtract
• Pythagorean Theorem
• Use Trigonometry

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

• Add
• Subtract
• Pythagorean Theorem
• Use trigonometry

Tags

CCSS.HSN-VM.B.4C

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

• Multiply
• Divide
• Pythagorean Theorem
• Use trigonometry

Tags

CCSS.HSN-VM.B.4A

CCSS.HSN-VM.B.4B

The U-shaped path a projectile follows.

• Vertical
• Horizontal
• Parabolic
• Drag

If a cannonball is horizontally shot at the same moment another cannonball is dropped from the same height, which will hit the ground first? (neglect air resistance)

• The one shot horizontally
• The one dropped
• Hit at Same Time
• The heavier one

A projectile is launched from a ledge with an initial horizontal velocity of 20 m/s. If the projectile flies for 40s to hit the ground, what is its vertical velocity just as it crashes? (assume no air resistance)

• 20 m/s
•  - 15,600 m/s
•  1600 m/s
•  - 392 m/s

Tags

NGSS.HS-PS2-1

A projectile is launched from a ledge with an initial horizontal velocity of 20 m/s. If the projectile flies for 40s to hit the ground, what is the height of the ledge? (assume no air resistance)

• 20 m
•  15,600 m
• 7,840 m
•  392 m

A projectile is launched from a height with an initial horizontal velocity of 20 m/s. If the projectile flies for 40s, what is its horizontal velocity 10s after it is launched?

• 20 m/s
• 0 m/s
• 800 m/s
• 2 m/s

A motorboat, which has a speed of 6 m/s, is headed east as it crosses a river flowing south at 3 m/s. If it takes 2 seconds to touch the other side, how far has the boat traveled downstream

Which equations do you choose to solve this problem?

• One set of constant velocity, one set of changing velocity

• Two sets of constant velocity

• Two sets of changing velocity

• Pythagorean Theorem

A motorboat, which has a speed of 6 m/s, is headed east as it crosses a 1000 m wide river flowing south at 3 m/s. What is the resultant velocity?

Which equation(s) do you choose to solve this problem?

• One set of constant velocity, one set of changing velocity

• Two sets of constant velocity

• Two sets of changing velocity

• Pythagorean Theorem