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Robert is accelerating a cart at the rate of 2.2 meters/second2. If the mass in the cart is doubled, and the net force is also doubled, what is the final acceleration?
A.
The acceleration is halved.
B.
The acceleration remains the same.
C.
The acceleration is doubled.
D.
The acceleration becomes zero.
E.
The acceleration is quadrupled.

Respuesta :

Answer;

B.  The acceleration remains the same.

Explanation;

F = ma  

the question said, F and M both are doubled ,so,  

2F =2ma

but you can see the result is same !!

so acceleration doesn't change,

Therefore; final acceleration is also 2.2

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