Se lanza hacia abajo un cuerpo de masa 2 kg con una velocidad de 1 m/s desde una altura de 10 m. Despreciando los rozamientos con el aire.
¿Cuánto vale y de qué tipo es la energía inicial? ¿Cuánto vale y de qué
tipo es la energía final? ¿Qué velocidad lleva cuando ha recorrido 3 m?
¿Con qué velocidad impacta con el suelo?

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.