If a charged sphere (of mass 9.10938291 times 10^-31 kg) in a large enclosed cha

Question

If a charged sphere (of mass 9.10938291 times 10^-31 kg) in a large enclosed chamber is measured to always have a constant velocity of + 1 m/s directly toward a stationary observer tor a period of 1 second, then answer these questions relative to only this observational data from the observer: A) what is the observed magnitude of the net force acting on the sphere during its observed motion? B) what is the sphere's observed total energy during its motion? C) What is the sphere's observed total momentum during its motion? D) Can the observer quantify the impulse of the sphere during its observed ed motion, if so what is its impulse? Please explain each response with at least equations and render all calculations to conventional derived S.I. units. Bonus: How would an observer determine if the sphere had rotational motion?

Explanation / Answer

a. observed magnitude of force=0

because force = mass x acceleration

during constant velocity, acceleration=0

so force=0

b.as sphere is in motion, then observed total energy = 1/2 x mass x velocity^2

= 1/2 x 9.1 x 10^-31 x 1^2= 4.55 x 10^-31 j

c.momentum = mass x velocity = 9.1 x 10^-31 x 1=9.1 x 10^-31

d.impulse = change in momentum=0 as it is moving with a constant velocity

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