Question

consider this situation: a football travels upward and rightward through the air. of the forces listed, identify which act upon the football. tap to select the forces that are present. normal gravity applied friction tension air resistance

Explanation:

Step1: Analyze normal force

The normal force acts perpendicular to the surface an object is in contact with. Since the football is in - air and not in contact with a surface, there is no normal force.

Step2: Analyze gravity

Gravity is a force that acts on all objects with mass near the Earth's surface, pulling them downwards. So, gravity acts on the football.

Step3: Analyze applied force

The applied force is the force that was initially given to the football to set it in motion. Once it is in - air, there is no continuous applied force acting on it (assuming no other external agents are pushing or pulling it).

Step4: Analyze friction

Friction usually refers to the force between two solid surfaces in contact. In the context of the football in - air, we consider air resistance instead of friction in the traditional solid - surface sense. So, there is no friction in the relevant sense here.

Step5: Analyze tension

Tension is a force that exists in ropes, strings, etc. There are no ropes or strings attached to the football, so there is no tension.

Step6: Analyze air resistance

Air resistance is a force that opposes the motion of an object through the air. As the football moves through the air, air resistance acts on it.

Answer:

Gravity, Air Resistance