The position of a crate sliding down a ramp is given by x = (0.25 t 3) m and y = (1.5t 2) m, where tis in seconds. Determine the velocity and acceleration when t = 2 sec (magnitudes and angles)

The material that keeps its new shape after it is stretched is called?

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

What is friction? how does it affect the motion of an object?