physics q

[inaccensa]

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Ball A moving with acceleration "A" along a frictionless surface, when a second block B is placed on top of block A, the acceleration drops to 1/5 the original. What is the ratio of mass A:mass B...

Shouldnt it be 1:4?

 

[costales]

Unless there is something else, ma = (m + xm)(a/5), so x = 4. 4 is not the correct answer?

 

[gabdolce]

Ball A moving with acceleration "A" along a frictionless surface, when a second block is placed on top of block A, the acceleration drops to 1/5 the original. What is the ration of mass A:mass A

Shouldnt it be 1:4?

What is the actual stem? Your stem as you present it doesn't make any sense. (comparing A to A)

 

[inaccensa]

What is the actual stem? Your stem as you present it doesn't make any sense. (comparing A to A)

I meant mass A:massB