CL QUIZ Week 2a

A displacement vector with a magnitude of 20. meters could have perpendicular components with magnitudes of

• 1. 10. m and 10. m

• 1. 12 m and 8.0 m

• 12 m and 16 m

• 1. 16 m and 8.0 m

The vector diagram below represents the velocity of a car traveling 24 meters per second 35° east of north.

What is the magnitude of the component of the car’s velocity that is directed eastward?

• 14 m/s

• 1. 20. m/s

• 1. 29 m/s

• 1. 42 m/s

An airplane traveling north at 220. meters per second encounters a 50.0-meters-per-second crosswind from west to east, as represented in the diagram.

What is the resultant speed of the plane?

• 1. 170. m/s

• 1. 214 m/s

• 226 m/s

• 1. 270. m/s

Which graph best represents the relationship between the velocity of an object thrown straight upward from Earth’s surface and the time that elapses while it is in the air? [Neglect friction.]

• 
• 
• 
• 

A rock falls from rest a vertical distance of 0.72 meter to the surface of a planet in 0.63 second. The magnitude of the acceleration due to gravity on the planet is

• 1. 1.1 m/s²

• 1. 2.3 m/s²

• 3.6 m/s²

• 1. 9.8 m/s²