An object has a velocity of 8 m/s and a kinetic energy of 480 j. what is the mass of the object? (formula:

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.