Question

what should a free - body diagram look like for a skydiver who has opened his parachute and is now slowing down as he falls? there is an arrow up for air resistance and an arrow down for gravity. the arrows are the same length. there is only an arrow down for gravity. there is an arrow up for air resistance and an arrow down for gravity. the arrow up is shorter than the arrow down. there is an arrow up for air resistance and an arrow down for gravity. the arrow up is longer than the arrow down.

Explanation:

When a skydiver is slowing down while falling after opening the parachute, the net force must be in the upward direction. Gravity acts downwards and air - resistance acts upwards. For the net force to be upward, the magnitude of the air - resistance force must be greater than the magnitude of the gravitational force. In a free - body diagram, the length of the arrow represents the magnitude of the force. So, the arrow for air resistance (upward) should be longer than the arrow for gravity (downward).

Answer:

There is an arrow up for air resistance and an arrow down for gravity. The arrow up is longer than the arrow down.