A person whose mass is 80 kg is being raised up the side of a cliff by a rope with a diameter of 2 cm. They are moving upward with an acceleration of 1 m/s². The unstretched length of the rope from the top of the cliff to the person is 10 m. The Young's modulus of the rope is 5 x 10^7 N/m². What distance does the rope stretch? Ignore the weight of the rope.
0.29 m
0.17 m
0.23 m
0.50 m
0.42 m