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A Moving Object of Mass 30 Kg Has 60 J of Kinetic Energy. What is Its Speed?

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Question

A moving object of mass 30 kg has 60 J of kinetic energy. What is its speed?
Numerical
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Solution

K.E = `1/2` mv²

60 = `1/2` (30) (v)²

or v² = 4 m/s

or v= 2 m/s

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Chapter 1: Force, Work, Energy and Power - 1.5 Graded Assignment [Page 55]

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Frank Physics Part 2 [English] Class 10 ICSE
Chapter 1 Force, Work, Energy and Power
1.5 Graded Assignment | Q 12. | Page 55
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