In case (a), the baseball player stands relatively stationary and throws the ball with the initial conditions shown. In case (b), he runs with speed v = 11 ft/sec as he launches the ball with the same conditions relative to himself. What is the additional range AR of the ball in case (b)? Compare the two flight times. AR= Answers: ta= i u= 106 ft/sec 9= 17° i 5.1' (b) ft sec sec

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.