A 50-cm3 block of wood is floating partially submerged in water, and a 50-cm3 block of iron is totally submerged in water. Which block has the greater buoyant force on it?
A) the wood
B) the iron
C) Both have the same buoyant force.
D) The answer cannot be determined without knowing the densities of the blocks.
Question 2
An object is not accelerated if
A) it is acted upon by an external influence.
B) its speed remains unchanged while its direction of motion changes.
C) its speed and its direction of motion are both unchanging.
D) its speed changes while its direction of motion remains unchanged.
E) both answers B and D are correct.
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