Please help me answer these two questions

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Identify the amplitude on the diagram and give the correct description. question 3 options: a because amplitude is the distance from wave crest to wave crest. b because the wavelength shows amplitude. c because amplitude is the distance between a crest (or trough) and rest. d because wavelength show amplitude. (brainiest if you get it right! ) ~kayla

Explain the consequences of this addiction to the brain tissue