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An 80-lb child is sitting on one end of a seesaw. If another 80-lb child jumps from a high platform onto the other end of the seesaw, what will happen?

A The first child will be lifted into the air, but remain seated.
Explaination
The force of the second child landing on the seesaw will propel the other end of the seesaw into the air.
B The first child will stay stationary on the ground.
C The second child will bounce off the seesaw into the air.
D The first child will bounce off the seesaw into the air.