Num movimento uniforme, o valor da: a) aceleração escalar é nula.
b) Velocidade escalar é positivo.
c) Velocidade escalar é negativo.
d) aceleração escalar é constante.
e) Velocidade escalar é nula.

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?