I giving free points doesn’t my twin brother look just like me

Ineed with these 2 questions. you.

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.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little