Answer:
19. D 60.6 J
Solution:
PEg=mgh
=(6.3 kg)(9.8 m/s2)(0.9815 m)
= 60.59 J
Note: I have converted grams to kg, and cm to meters)
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20. A. KE= 708.75 J
KE= 0.5(mv2)
= 0.5 (6.3 kg)(15 m/s2)2
= 0.5 (6.3 kg)(225 m2/s2
= 708.75 J
Note:
J = kg·m2/s2
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Answers & Comments
Answer:
19. D 60.6 J
Solution:
PEg=mgh
=(6.3 kg)(9.8 m/s2)(0.9815 m)
= 60.59 J
Note: I have converted grams to kg, and cm to meters)
_________________________________________________
20. A. KE= 708.75 J
Solution:
KE= 0.5(mv2)
= 0.5 (6.3 kg)(15 m/s2)2
= 0.5 (6.3 kg)(225 m2/s2
= 708.75 J
Note:
J = kg·m2/s2