an archer shoots at a a target 60 m away. if she shoots at a velocity at 55 m/s from a height of 1.5 m, does the arrow reach the target before striking the ground? What should the archer do to get her next shot on target?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?