An object moving in the +x direction experiences an acceleration ...

[olgavictoria]

An object moving in the +x direction experiences an acceleration of +2.0 m/s2. This means the object
 
  A) travels 2.0 m in every second.
  B) is traveling at 2.0 m/s.
  C) is decreasing its velocity by 2.0 m/s every second.
  D) is increasing its velocity by 2.0 m/s every second.

Question 2

A particle physicist observes cosmic rays creating a new particle high in the atmosphere, and the speed of this particle is measured at 99.7 the speed of light. It is unstable, and is observed to decay in an average 37.0 s.
 
  If this particle were at rest in the laboratory, what would be its average lifetime? A) 2.9 s
  B) 18 s
  C) 5.3 s
  D) 12 s
  E) 4.3 s

[frejo]

Answer to Question 1

D

Answer to Question 2

A

[olgavictoria]

Thanks

[frejo]

Welcome