You throw an object from the top of the Empire State building straight down with an initial speed (Vi) of 15 m/s. If the acceleration due to gravity (a) is 10 m/s2, how fast will the object be moving (Vf) when it hits the ground 8 seconds (t) later?

When using the scientist method, which step comes last?

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?

At what time would the magnitude of the velocity reach 36.00 km/hr