The position of an air-track cart that is oscillating on a spring ...

[Alygatorr01285]

The position of an air-track cart that is oscillating on a spring is given by x = (12.4 cm) cos(6.35s-1)t. At what value of t after t = 0 s is the cart first located at x = 8.47 cm?
 
  A)
 
  4.34 s
 
  B)
 
  0.108 s
 
  C)
 
  0.129 s
 
  D)
 
  7.39 s
 
  E)
 
  7.75 s

Question 2

A 1.0-kg object is moving with a constant velocity 2.0 m/s toward the north. There are two forces acting on the object. One of the forces is 2.0 N north. The other force is ________
 
  A)
 
  1.0 N north.
 
  B)
 
  3.0 N north.
 
  C)
 
  2.0 N south.
 
  D)
 
  2.0 N north.
 
  E)
 
  0.

[stallen]

Answer to Question 1

C

Answer to Question 2

C

[Alygatorr01285]

Both answers were spot on, thank you once again

[stallen]

Great! Please up vote