Marcia Places a Lead Block and an Iron Block on the Table

Multiple Choice

Marcia places a lead block and an iron block on the table, and hits both of them with the same force. The lead block is twice as massive as the iron block. The acceleration of the lead block is

A) a quarter of that of the iron block.
B) two times that of the iron block.
C) half that of the iron block.
D) equal to that of the iron block.
E) four times that of the iron block.