In class i mentioned that we used to show an actual ballistic pendulum where a rifle is shot into a heavy block to see how the block moves. assume a 4.7 gram bullet is fired at 678 m/s into a 4.8 kg block of wood. the block hangs from a long string to approximate 1d motion. how fast does the block move just after the collision in m/s?

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward