How long must the force act to bring the body to rest

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Reference no: EM13304663

1) a) A body has a mass of 12.2 kg and a speed of 0.829c. What is the magnitude of its momentum?

b) If a constant force of 416 N acts in the direction opposite to the body's motion, how long must the force act to bring the body to rest?

2) When an electron travels at 0.645c, what is its total energy in MeV?

Reference no: EM13304663

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