Kinematics

In practice A of the figure, What is  the magnitude of the  resultant displacement?

• 5 km 
• 8 km
• 11 km
• 15 km

In practice A of the figure, what is the direction of the resultant displacement?

• 63 degrees, South of East

• 63 degrees, North of West

• 27 degrees, North of West

• 27 degrees, South of West

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 

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

Find the direction and magnitude of the resultant vector for the drawing of two forces.

• Direction 90°
  Magnitude 139.0N
• Direction 52.3°
  Magnitude 195N
• Direction 52.3°
  Magnitude 139.0N
• Direction 37.7°
  Magnitude 139.0N

George Washington throws a baseball with an initial velocity of 20.2 feet per second at an angle of 69° with the horizontal.  Find the initial vertical and horizontal velocity of the ball.

• Horizontal 18.9
   Vertical 7.2
• Horizontal 7.2
   Vertical 18.9
• Horizontal 15.2
   Vertical 9.6
• Horizontal 9.6
   Vertical 15.2

Find h

• 35.60
• 35.00
• 35.71
• 61.03

You need a ladder that will reach up a 25 foot tall house when placed 10 feet away from the house. How tall does the ladder need to be?

• 25 feet
• 26 feet
• 27 feet
• 28 feet

What is the height of the tree? Round the the nearest foot. 

• 38 ft
• 63 ft
• 20 ft
• 98 ft

Determine the components of the vector:

• <5, 8.7>

• <8.7, 5>

• <59.1, 10.4>

• <10.4, 59.1>