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WAEC Physics 2015 Paper
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© africaexams.com
Question : 14
Total: 50
A body of mass 1000kg is released from a height of 10m above the ground. Determine its kinetic energy just before it strikes the ground .[g = 10ms
-2
]
10J
10
3
J
10
4
J
10
5
J
Validate
Solution:
Ke = mgh
Ke = Pe
1
2
MV
2
= mgh
Ke = 1000 x 10 x 10
Ke = 100000J
Ke = 10
5
J
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