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    kpiasecki's Avatar
    kpiasecki Posts: 1, Reputation: 1
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    #1

    Apr 15, 2012, 02:38 PM
    A rocket of mass 100,000 kg undergoes an acceleration of 2m/s2
    A rocket of mass 100,000 kg undergoes an acceleration of 2m/s2. Show that the force being developed by the rocket engines is 2000,000 N.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Apr 17, 2012, 09:19 AM
    I assume you meant to write "200,000 N," not "2000,000 N," correct?

    Simply use F=ma. You have values for m (mass) and a (acceleration). But whoever wrote this question should have noted that the rocket is accelerating in a horizontal direction, since for the rocket to rise vertically would take more force than that to overcome gravity -- note that the rockets weight is 100,000 Kg x 9.8 m/s^2 = 980,000 N.
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