Physics - 11/4/21

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 

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

In practice B of the figure, which displacement is the horizontal component?

• 30 km, East
• 30 km, West
• 40 km, North
• 40 km, South

In practice B of the figure, which displacement is the vertical component? 

• 40 km, South
• 40 km, North
• 30 km, East
• 30 km, West

If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?

• 20m
• 40m
• 0m
• -20m