4.15
A small 7.40-kgrocket burns fuel that exerts a time-varying upward force on therocket. This force obeys the equation F=A+Bt2.Measurements show that at t=0,the force is 104.0N, and at the end of the first 1.50s, it is 193.0N.
Find the constant A
Findthe constants B
Find the net force on this rocket the instant after the fuel ignites.
Find the acceleration of this rocket the instant after the fuelignites.
Find the net force on this rocket 4.90safter fuel ignition.
Find the acceleration of this rocket 4.90safter fuel ignition.
Suppose you were using this rocket in outer space, far from allgravity. What would its acceleration be 4.90safter fuel ignition?
