Aphysics book is moved once around the perimeter of a table of dimensions 1 m by 3 m. if the book ends up at its initial position, what is the distance traveled

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

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.

Can anybody me with this? ? (picture included.)