Asmall object is placed at the top of an incline that is essentially frictionless. the object slides down the incline onto a rough horizontal surface, where it stops in 5.0 s after traveling 60 m. a) what is the speed of the object at the bottom of the incline and its acceleration along the horizontal surface? b) what is the height of the incline?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

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

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?