Final answer:
A parachute fall is not safe on the Moon because its low surface gravity cannot sustain an atmosphere for the parachute to deploy effectively, and lack of air means no drag force to slow the descent, even if a fall could be six times higher due to lower gravitational acceleration.
Step-by-step explanation:
The fall of a parachute is not safe on the Moon due to the lack of an atmosphere. On Earth, a parachute slows down a fall because air resistance creates a drag force against the parachute's surface. However, the Moon's surface gravity is only about one-sixth that of Earth, which is too low to retain an atmosphere. This means that there is no air to fill the parachute and create the necessary drag to slow the descent, rendering a parachute useless on the Moon.
Additionally, the severity of a fall depends on the speed at which you strike the ground. Given the reduced gravitational acceleration on the Moon, which is about 1/6 that of Earth, all other factors being the same, a safe fall could potentially be up to six times higher on the Moon than on Earth. However, the lack of atmospheric drag would still result in a hard impact, making a parachute fall unsafe.