Rockets are propelled by the ejection of the products of the combustion of fuel Consider a rocket of total mass m 1 to be traveling at speed v 1 in a region of space where gravitational forces are negligible Suppose that the combustion products are ejected at a constant speed v r relative to the ro...

Rockets are propelled by the ejection of the products of the combustion of fuel. Consider a rocket

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Rockets are propelled by the ejection of the products of the combustion of fuel. Consider a rocket of total mass m₁ to be traveling at speed v₁ in a region of space where gravitational forces are negligible. Suppose that the combustion products are ejected at a constant speed v_r relative to the rocket. Show that a fuel ?burn? which reduces the total mass of the rocket to m₂ results in an increase in the speed of the rocket to v₂, such that

Suppose that 2.1 x 10⁶ kg of fuel are consumed during a ?burns? lasting 1.5 x 10² s. Given that there is a constant force on the rocket of 3.4 x 10⁷ N during this ?bum?, calculate v_r. Hence calculate the increase in speed resulting from the ?burn? if m₁ is 2.8 x 10⁶ kg. What is the initial vertical acceleration that can be imparted to this rocket when it is launched from Earth, if the initial mass is 2.8 x 10⁶ kg?

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Question Posted: Aug 08, 2011 09:16 AM

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Rockets are propelled by the ejection of the products of the combustion of fuel. Consider a rocket

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