Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

What is the relationship between the direction of motion of the balloon and the wind currents

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.