1. A marble rolls along the track below with no friction. The sequence of positions

on the track listed in order from the lowest kinetic energy to the highest kinetic

energy is: *

O

A. 1,5, 4, 3, 6:2

O

B. 1,2,3,4,5,6

O

C. 1,5, 4, 2, 3, 6

D none of the above

pls hurry

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Which transition by an electron will release the greatest amount of energy? oa ob oc od