Imagine you are making Kool Aid. Kool Aid comes in packets. The powder inside the packets is made up of very small particles. The directions say the water should be stirred when the Kool Aid is aided. Your mother says that you should heat the water, because that will help to dissolve the sugar that you must add next. Using your knowledge of how things dissolve, explain why making Kool Aid requires the above steps? *

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.

Anybody wanna ? (picture included? )

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?