How much energy would it taketo accelerate a 2 Mg payload to this speed? The spe

Question

How much energy would it taketo accelerate a 2 Mg payload to this speed? The speed of light is3 × 108 m/s . Answer in units of J.


The speed I think they mean by "this speed" is 0.9911188925c(2.97335e8 m/s) which was correctly solved for in part 1.

I used E=mc^2 which didn'twork. Why is that wrong? How much energy would it taketo accelerate a 2 Mg payload to this speed? The speed of light is3 × 108 m/s . Answer in units of J.


The speed I think they mean by "this speed" is 0.9911188925c(2.97335e8 m/s) which was correctly solved for in part 1.

I used E=mc^2 which didn'twork. Why is that wrong?

Explanation / Answer

we know that E= mc2 so, at speed c mass m = m0= 2 * 106 gm so , now equating both we get the answer

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