Particle in-phase A. need to have same amplitude

B. Have same amplitude are moving in same direction
C. Need only be moving in the same direction

D. need only have the same position

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?

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?