On the earth, an astronaut can safely jump to the ground from a height of 1.2 m ; her velocity when reaching the ground is slow enough to not cause injury. from what height could the astronaut safely jump to the ground on the moon?

We use the kinematic equation,

Here, u is initial velocity, and v is final velocity, g is acceleration due to gravity and h is maximum height.

The velocity of the astronaut reaching the ground from h is

Here, u = 0.

Similarly, for moon

.

Take,   and .

For safe jump to the ground, the velocity should be same.

Therefore,

Thus, the astronaut safely jump to the ground on the moon from height 7.2 m.

a is the best answer your welcome