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Problem 57 Easy Difficulty

$\bullet$ A $70-\mathrm{kg}$ astronaut floating in space in a $110-\mathrm{kg}$ MMU
(manned maneuvering unit) experiences an acceleration of
0.029 $\mathrm{m} / \mathrm{s}^{2}$ when he fires one of the MMU's thrusters. (a) If the speed of the escaping $\mathrm{N}_{2}$ gas relative to the astronaut is 490 $\mathrm{m} / \mathrm{s}$ ,
how much gas is used by the thruster in 5.0 $\mathrm{s} \%$ (b) What is the
thrust of the thruster?

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Video Transcript

Hi, everyone. Here it is, given that has to not having the mask. 70. Katie is in a menu having Gama's 100 Ted Caijing. It is moving with acceleration 0.0 tonight. Meet up per second squared, then astronaut First bun off, sister. Oh. Mm. Union. We have to find mass off nitrogen. Toby used him five seconds. If speed off night, total gas ejected out is full 90 meter per second. It and we're to calculate the trust acting on it. Total mass of the system mass off. Explain it. Plus, master. Mm you. That is 70 and 210. You will get one at T k. G. So I am able peaceful toe be and toe do you have upon duty so d m. You will get em egg. We end. Do and to duty substitute the masses. 1 80. I'm just a speed off nitrogen gas is 4 90. Acceleration is 0.29 time interval is five. So it is. Why did you know 53 kg It exhausted negative means negatives and will be there. It means it is Toby removed from the system so that you should always keep in mind because it is negative means it is existed out from the system. Now we have to calculate the trust. Trust is to find us minus. We can do D m upon deity substitute develop minus 4 90 and tau minus 0.53 on five. So it would be equal toe 5.22 neutrally. Okay, that's all. Thanks for watching it.

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Video Transcript

Hugh D. Young

College Physics

Christina Krawiec

Liev Birman

Aspen Fenzl

Jared Enns

This textbook answer is only visible when subscribed! Please subscribe to view the answer

College Physics

Christina Krawiec

Liev Birman

Aspen Fenzl

Jared Enns

Hugh D. YoungCollege Physics

Christina Krawiec

Liev Birman

Aspen Fenzl

Jared Enns

Hugh D. Young

College Physics