1. what is the KE of a 12 kg object moving at 19 m/s?
2. What id the Pe of a 3.5 kg object found at the cabinet that is 5.2 m high?
with solution
2. What id the Pe of a 3.5 kg object found at the cabinet that is 5.2 m high?
with solution
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Answer:
1.)2166 Joules
2.)178.36 Joules
Explanation:
1.)KE=mv²/2
KE=(12kg)(19m/s)²-multiply 19 by itself
KE=(12kg)(361m²/s²)
KE=4332kg m²/s²÷2
KE=2166kg m²/s²
KE=2166 Joules
2.)PE=(m)(g)(h)
PE=(3.5kg)(9.8m/s²)(5.2m)
PE=178.36kg m²/s²
PE=178.36 Joules