Answer:
A new substance is not formed.
Explanation:
Ice melting is not a chemical reaction because when an ice is melting there is no chemical change happening upon the ice. The water molecules are still the same, they are still water molecules.
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Answer:
A
Explanation:
Density is mass/ volume
if the numerator is greater ( A) then the density is greater than B
As per Newton's II law we know that
rate of change in momentum is Net outside force on the object
now here we will have if net outside force will be zero
then we can say
so from above equation we can say
and hence we have
so the correct answer will be
<em>3.) in the absence of outside forces</em>
Answer:
yes
Explanation:
because -20m/s means decrease in acceleration and Time , why 10m/s means increase in acceleration and Time