In which of the following processes does the system's total mass ...

[fahad]

In which of the following processes does the system's total mass change?
 
  A) An automobile speeds up.
  B) A rubber ball is squeezed.
  C) The total mass changes in both of the above processes.
  D) The total mass changed in neither of the above processes.

Question 2

A particular motor can provide a maximum torque of 110 N  m. Assuming that all of this torque is used to accelerate a solid, uniform, cylindrical flywheel of mass 10.0 kg and radius 3.
 
  00 m, how long will it take for the flywheel to accelerate from rest to A) 3.33 s
  B) 2.83 s
  C) 4.03 s
  D) 4.36 s

[Anton]

Answer to Question 1

C

Answer to Question 2

A

[fahad]

Thank you!

[Anton]

Always glad to help...