A pile driver drives a post into the ground. The mass of the pile driver is 2 600 kg and it is dropped through a height of 9.0 m on each stroke. If the resisting force of the ground is 4.0 × 10^6 N, how far is the post driven in on each stroke?
a. 9.2E+1 cm
b. 5.9E–3 cm
c. 7.1E–4 cm
d. 5.7E–2 cm
d
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