Question

consider this situation: a sledder is moving to the right across unpacked snow and skidding to a stop. of the forces listed, identify which act upon the sledder. tap to select the forces that are present. normal gravity applied friction tension air resistance

Explanation:

Step1: Analyze normal force

The snow exerts an upward - normal force on the sledder to balance the force of gravity.

Step2: Analyze gravitational force

Gravity acts downward on the sledder due to the Earth's gravitational pull.

Step3: Analyze friction force

The sledder is skidding to a stop on unpacked snow, so there is friction between the sled and the snow, which opposes the sledder's motion.

Step4: Analyze applied force

There is no external applied force mentioned as the sledder is skidding to a stop due to internal or external agents other than friction.

Step5: Analyze tension force

There is no rope or string involved, so no tension force is present.

Step6: Analyze air - resistance force

Since the sledder is moving slowly across snow, air - resistance is negligible compared to friction and other forces.

Answer:

Normal, Gravity, Friction