Respuesta :

rxfxhx

Answer:

4Kg

Explanation:

1/2mv²=K.E

1/2m×3²=18J

1/2m×9=18

9m=18×2

9m=36

m=36/9

m=4Kg

lynton2312

Answer:

F=MA FORSE= MASS X ACCELERATION

Explanation:

So the answer should be 54 as 18 X 3 = 54

( I read the question wrong)