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Answer:
Exchange Reaction
Explanation:
The given reaction AB + CD = AD + CB is known as exchange reaction
At the beginning of the process, AB and CD must pass through decomposition reaction by breaking up. After that, A and D must form by synthetic reaction and likewise C and B
The chemical reaction involves exchange of chemical elements between the chemical components AB and CD.
Therefore, The type of example represented by the reaction
AB + CD = AD + CB
is known as Exchange reaction.
The net force on the sled is 300 N
Explanation:
First of all, we start by finding the acceleration of the bobsled, by using the suvat equation:

where:
v = 6.0 m/s is the final velocity of the sled
u = 0 is the initial velocity
a is the acceleration
s = 4.5 m is the displacement of the sled
Solving for a, we find

Now we can find the net force on the sled by using Newton's second law:
F = ma
where
F is the net force
m = 75 kg is the mass of the sled
is the acceleration
Solving the equation, we find the net force:

Learn more about acceleration and Newton laws here:
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