Practice Questions for Exam 1

Vector A has a magnitude of 6.00 m and points 30.0^o north of east. Vector B has a magnitude of 4.00 m and points 40.0^o south of west. What is the resultant of adding these two vectors together?

• 2.2 m , 11 degrees N of E

• 2.2. m , 11 degrees S of E

• 2.5 m, 11 degrees N of E

• 2.5 m, 11 degrees S of E

What is the difference between 103.5 and 102.24 expressed to the correct number of
significant figures?

• 1.26

• 1.3

• 1.260000

• 1.260

Acceleration is (a)   divided by time

Two objects are thrown from the top of a tall building. One is thrown up, and the other
is thrown down, both with the same initial speed. What are their speeds when they hit
the street? Neglect air resistance.

• The one thrown down is traveling faster

• The one thrown up is traveling faster

• They are traveling at the same speed

• It is impossible to tell because the height of the building is not given

Noobus is a death-defying squirrel with miraculous jumping abilities. Running to the edge of a flat rooftop, she leaps horizontally with a speed of 6.00 m/s. If she just clears the 3.00 m gap between the houses and lands on the neighbor's roof, what is her speed upon landing?

• 7.75 m/s

• 7.05 m/s

• 3.25 m/s

• 5.6 m/s