The magnitude of the drag force of air resistance on a certain ...

[cmoore54]

The magnitude of the drag force of air resistance on a certain 20.0-kg object is proportional to its speed. If the object has a terminal speed 80.0 m/s, what is the magnitude of the drag force on the object when it is falling with a speed 30.
 
  0 m/s?
  A) 73.5 N B) 15.0 N C) 7.50 N D) 42.7 N E) 196 N

Question 2

In Figure 9.1, the time t, when P returns to the original position on the x-axis, is closest to:
 
  A) 13 s
  B) 18 s
  C) 25 s
  D) 35 s
  E) 50 s

[Galvarado142]

Answer to Question 1

A

Answer to Question 2

D

[cmoore54]

Both answers were spot on, thank you once again

[Galvarado142]

Great! Please up vote