An automobile slows from 26 m/s to 18 m/s. its acceleration is
-2.0 m/s2. how much time does it take for the vehicle to slow
down?
a) 2.5s
b) 4.0 s
c) 1.55
(someone ^_^ i’m not a number person whatsoever)

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?