At what velocity (m/s)must a 19.9 g object be moving in order to possess a kinetic energy of 1.0 J?
A)0.35 m/s
B)2.8 m/s
C)0.13 m/s
D)0.031 m/s
E)0.016 m/s

Name: At what velocity (m/s)must a 19.9 g object be moving in order to possess a kinetic energy of 1.0 J? A)0.35 m/s B)2.8 m/s C)0.13 m/s D)0.031 m/s E)0.016 m/s
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Quizplus · Accepted Answer

Kinetic energy = 1/2 mv^21.0 J = 1/2 * 0.0199 kg * v^2v^2 = 1.0 J / (1/2 * 0.0199 kg)v^2 = 100.5 J/kgv = sqrt(100.5 J/kg)v = 0.35 m/s

At What Velocity (M/s)must a 19