Una masa de 5 kg tiene una velocidad inicial vo = (20 i - 30 j) m/s, cuál es la energía cinética en este tiempo. Determine el cambio en su energía cinética si su velocidad cambia a (-8 i + 4 j) m/s.

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel

If a star is moving toward earth, it is

What is the largest meteoroid that has collided with this planet