How does Newton's third law explain how a rocket is launched upward? A. The force of Earth's gravity balances with the force of the rocket engines. B. The mass of the rocket determines how much force is needed to move it into orbit. C. The rocket will remain motionless on the launchpad until an unbalanced force is applied. D. The force it exerts on its exhaust gases is equal to the force the exhaust gases exert on the rocket.

Industrial processes often require the damping of vibrations. consider a workbench that uses four large ideal springs in place of traditional legs, with each spring supporting one corner of the workbench and exhibiting a force constant of 47500 n/m. this workbench is used when creating products that involve highly unstable chemicals. according to specifications, the acceleration of the manufacturing equipment must be held to less than 22.3 m/s2 for the manufacturing process to proceed safely. the amplitude of vibrations are expected to remain under 0.622 mm throughout. given that the workbench and maufacturing equipment combine to 6.05 kg, find the maximum acceleration expected of the equipment and workbench. (ignore the mass of the springs.)