5. When placed in water, objects with a density of greater than 1 gm/cm3 will a: Sink
b:Float

Explain your answer.

A: sink

Explanation: If an object's density is:

GREATER than , it will SINK in water.

LESS than , it will FLOAT in water.

hope this helps

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

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