A rocket has a mass of 1.40×04 kg and its engine has a thrust of 200×105...

A rocket has a mass of 1.40×04 kg and its engine has a thrust of 200×105 N. If its engines fire in the vertical direction for 1 min starting from rest, to what vertical height would it rise in the absence of air resistance? (To simplify things, assume the mass is constant. However, in reality the mass of rockets decreases substantially while rising)

Expert Solution

i think 1.4 * 04 = 1.4 * 104

i am using this if it is not right then use whichever mass you like and proceed as follows

Thrust - gravitational force = m*a

a = (Thrust )/m - g

a = 21000/1456 - 9.8

a = 14.423 - 9.8

a = 4.623 m/s^2

h = u*t + 0.5 * a * t * t

u = 0 t = 60s

h = 0.5 * 4.623 *60*60

h = 8321.4 m

genius_generous answered 3 years ago

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