Vectors and Projectiles Review

A vector quantity has ______________.

• Magnitude only

• Magnitude and Direction

• Direction only

• Direction and angles

A boat is traveling at 50 m/s in a river flowing at 15 m/s in the exact same direction. What is the resultant velocity of the boat?

• 65 m/s

• 35 m/s

• 52 m/s

• It cannot be determined

A hiker walks 40 m due North then turns due South and walks 60 m. What is the resultant displacement?

• 100 m North

• 100 m South

• 20 m North

• 20 m South

When finding the resultant of two vectors quantities, you must place them

• tip to tail

• tip to tip

• tail to tail

• So they make a triange

Tony walks 3 m and then 4 m. Which of these can not be his displacement?

• 7 m if they are in the same direction

• 1 m if they are in opposite directions

• 5 m if they are perpendicular directions

• 8 m if they are in the same direction

Which of the following represents the y-axis (vertical) component of Vector “V” shown in the figure?

• 10 m/s, North

• 10 m/s, South

• 12 m/s East

• 12 m/s West

Which is the best description for the 2 vectors pictured?

• AB represents 20 m Southeast and CD represents 10 m Northwest

• AB represents 10 m Southeast and CD represents 20 m Northwest

• AB represents 10 m Northwest and CD represents 20 m Southeast

• AB represents 20 m Northwest and CD represents 10 m Southeast

Symbol for horizontal velocity

• Vx

• dx

• Vy

• dy

symbol for horizontal displacement

• Vx

• dx

• Vy

• dy

For projectiles launched at an angle, this is equal to zero at the top of the trajectory.

• Vx

• Vy

• a

• dy