Author Question: A car moves from the point (3.0 m)x + (5.0 m)y to the point (8.0 m)x - (7.0 m)y in 2.0 s. What is ... (Read 31 times)

Bob-Dole · **on:** Jul 29, 2018

A car moves from the point (3.0 m)x + (5.0 m)y to the point (8.0 m)x - (7.0 m)y in 2.0 s. What is the direction of the average velocity of the car?

A)

67 from the x-axis
B)

-67 from the x-axis
C)

33 from the x-axis
D)

-33 from the x-axis
E)

52 from the x-axis

Question 2

An incompressible fluid flows steadily through a pipe that has a change in diameter. The fluid speed at a location where the pipe diameter is 8.0 cm is 1.28 m/s. What is the fluid speed at a location where the diameter has narrowed to 4.

0 cm? A)

0.32 m/s

B)

0.64 m/s

C)

1.28 m/s

D)

2.56 m/s

E)

5.12 m/s