what is the relationship between the horizontal range and the impact height of a projectile ie the projectile is landing below the level it was fired at.. i need and equational relationship... any answers that give a link will be reported

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

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?

It is advised not to hold the thermometer by the bulb while reading it