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JAMB Physics 2019 Paper
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© africaexams.com
Question : 77
Total: 100
A projectile of mass 4kg is fired vertically and reaches a maximum height of 40m. Calculate the potential energy at the highest point
(g = 10ms
−
2
1800J
1600J
600J
440J
Validate
Solution:
Potential energy at the highest point = mgh
PE = 4 × 10 × 40 = 1600J
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