At an instant when a particle of mass 80 g has a velocity of 25 ...

[jace]

At an instant when a particle of mass 80 g has a velocity of 25 m/s in the positive y direction, a 75-g particle has a velocity of 20 m/s in the positive x direction. What is the speed of the center of mass of this two-particle system at this instant?
 a. 16 m/s
  b. 45 m/s
  c. 23 m/s
  d. 20 m/s
  e. 36 m/s

Question 2

At an instant when a particle of mass 50 g has an acceleration of 80 m/s2 in the positive x direction, a 75-g particle has an acceleration of 40 m/s2 in the positive y direction. What is the magnitude of the acceleration of the center of mass of this two-particle system at this instant?
 a. 60 m/s2
  b. 56 m/s2
  c. 40 m/s2
  d. 50 m/s2
  e. 46 m/s2

[emily12345]

Answer to Question 1

A

Answer to Question 2

C

[jace]

Thanks for the timely response, appreciate it

[dawsa925]

Wow, this really help