¿Cómo midieron el diámetro del planeta Tierra, si aún no se conocían todos los continentes ni océanos?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

The force it would take to accelerate an 900-kg car at the rate of 6m/s2