Question

Model rockets are fun. These tiny engines (about the size of your little finger) that fire for around 2 seconds and have a surprising thrust! Your rocket has a mass of 0.5 kg and you want to know its maximum speed! You place the rocket, count down, light the fuse, and away it goes! Using a nifty radar gun, you measure the velocity of the rocket to be 47 m/s the moment the engine runs out of fuel. Calculate the force this engine exerts on your rocket. HINT: Be careful here. There are TWO forces in play here that each give their own accelerations to the rocket. You observe a NET acceleration with the rocket... 15.2 N 33.3 N 11.8 N 16.7 N

Answer 1

m-0.5kg. Finol Speed = 47 m/s su DE ; tione laken - 2 second. 47-0 E 23.5m/2. Ang acck - ou = 2 fa 2305 my? 136, Pyer Newtons 246.000 Ith-ng =mo Ifsroust ing Fonc migra) = o-SX (28:5-1981) - 16.655N Ama Force exerted by engine = 16.70