1) How much work does it take to accelerate an electron(mass=9.11x10^-31kg)(adsbygoogle = window.adsbygoogle || []).push({});

from rest to a speed of 5.0x10^6 ms?

I know you have to use more than 1 equation to solve it but I can't seem to get close to an answer.

2) How much work must be done to stop a 1000-kg car travelling at 100km/h?

Is it me or does this question not have enough info.

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# Homework Help: Work and Energy Problems [help]

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