A because when gravity and the force are equilibrium it tend to be equal or stay at rest or constant velocity. But when the force of a plane is less than the force of gravity it will go down to the ground. Unless when the force of a plane is greater than the force of gravity, the plane will move upward at increasing rate.
Hope this helps
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i can't click the answer bottom but the answer is "17th to 18th century" i hope this helps
I believe C is your answer (also, I am also using tht same exact program!)
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Hi... Potential energy is converted to kinetic energy and kinetic energy is converted to potential energy
