What is the speed of a 0.145 kg baseball if its kinetic energy is 109 J?

Answer 1

Since Kinetic Energy = 1/2*mass*velocity^2, its velocity will be equal to the square root of 2*KE/m, in this case, sqrt(2*108/149).

However a 149 kg Baseball is twice as big as a typical man, so this is highly improbable.

Answer 2

KE = 1/2 mass * velocity squared

KE = 1/2mV^2

109 Joules =1/2(145 kg)V^2

multiply through by 2

218 = (145)V^2

divide both sides by 145

1.50345 = V^2

take square root both sides

1.23 m/s = the velocity ( speed )

Answer 3

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Answer 4

38.8 m/s