Gravitational force (weight) acts on the jet downward.
The normal force acts on the plane upward.
Drag (air resistance) acts in a direction opposing the motion.
Thrust force from the engine acts in the direction of the motion.
A jet plane is speeding down the runway during takeoff. Air resistance is not negligible, friction is negligible.
Identify the forces on the jet. Choose your answers from the following list:
b) Spring Force
d) Normal Force
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