A4kg model rocket, initially at rest, accelerates upwards by generating a73N thrust as it burns fuel...

Question

A4kg model rocket, initially at rest, accelerates upwards by generating a73N thrust as it burns fuel for4.5s. After running out of fuel the rocket continues upwards until reaching maximum height. Throughout the flight the rocket experiences a steady18N drag force. Neglect the loss of mass as the rocket ejects fuel.

Dikchha · Accepted Answer

A=f/m=73-18/4.5=12.22m/s2
v= u +at= 0+12.22*4.5=54.99 m/s
s1= 1/2 at^2= 1/2*12.22*4.5*4.5= 123.72m
s2= (54.99)^2/(2*9.8)= 154.2 m
ymax = s1+s2 = 278 m

A4kg model rocket, initially at rest, accelerates upwards by generating a73N thrust as it burns fuel for4.5s. After running out of fuel the rocket continues upwards until reaching maximum height....

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