Asked by luis brito
                A 20 kg object falls from a height of 30 meters. How many joules of kinetic energy will the object have just before it hits the ground?
            
            
        Answers
                    Answered by
            bobpursley
            
    PE= m g h  mass in kg, g in m/s^2, h in meters.
    
                    Answered by
            sly
            
    30
    
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