Answer:
Explanation:
Q1
PE=mgh=75*10*300=225000J
Q2
KE=1/2(MV^2)
KE=0.5(3*2^2)=0.5*3*4=6J
Q3
PE=mgh
9800=50*10*h
h=9800/500=19.6 meters
Q4
33750=0.5(M(30)^2)
33750/0.5*900=M
75Kg=M
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Answers & Comments
Answer:
Explanation:
Q1
PE=mgh=75*10*300=225000J
Q2
KE=1/2(MV^2)
KE=0.5(3*2^2)=0.5*3*4=6J
Q3
PE=mgh
9800=50*10*h
h=9800/500=19.6 meters
Q4
KE=1/2(MV^2)
33750=0.5(M(30)^2)
33750/0.5*900=M
75Kg=M