2. Calculate the kinetic energies of each of the following objects. Express your answers in Joule...

Transcribed Image Text:

2. Calculate the kinetic energies of each of the following objects. Express your answers in Joule (J) units. [Note that a Joule is the SI unit of energy, as further described in Appendix B, and 1 mile 1.609 km, 1 oz 28.35 g, and 1 lb = 0.4536 kg.] a) A baseball weighing 5.25 oz moving at 20 mph b) A bicyclist weighing 175 lb moving at 20 mph J= c) What would the ratio of the velocities of the baseball and the bicyclist have to be if they have the same kinetic energy? - = K = = = mv 2 kg-m S 2. Calculate the kinetic energies of each of the following objects. Express your answers in Joule (J) units. [Note that a Joule is the SI unit of energy, as further described in Appendix B, and 1 mile 1.609 km, 1 oz 28.35 g, and 1 lb = 0.4536 kg.] a) A baseball weighing 5.25 oz moving at 20 mph b) A bicyclist weighing 175 lb moving at 20 mph J= c) What would the ratio of the velocities of the baseball and the bicyclist have to be if they have the same kinetic energy? - = K = = = mv 2 kg-m S

Answer rating: 100% (QA)

Certainly To calculate the kinetic energy K of an object we use the formula K frac12 m v2 where m is the mass of the object in kilograms kg and v is t... View the full answer