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6. A spring which has an elastic potential energy of 33.52 J and a force constant of
215.60 N/m has been compressed. Calculate the spring's displacement. (2 pts)
a. 0.56 m
b. 5.6 m
с. 6.43 m
d. 64.3 m
7. A block of mass 2.0 kg rests on a table. If its gravitational potential energy is 150 J
now, how high is the table? (2 pts)
a. 0.765 m
b. 7.65 m
С. 30 m
d. 300 m

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