Answer:
125
Explanation:
7.62
because you have to divide 32/4.2
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3000 J
Kinetic energy is:
KE = ½ mv²
If m = 15 kg and v = -20 m/s:
KE = ½ (15 kg) (-20 m/s)²
KE = 3000 J
amplitude is the answer
