Distance= 10km due West in 1hour calculate the velocity​

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Compare the patterns of the two waves shown in the image. which statement is true about these waves?

A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.