Hi i need to pass this test im being timed please help

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.

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)