When the traffic light turns green, a car that has been waiting at the intersection starts with a constant acceleration of 6 feet/s². at the same instant it is overtaken by a truck moving at a constant speed of 30 feet/s.
(a) how far beyond its starting point does the car overtake the truck?
(b) how fast is the car traveling when it overtakes the truck?
(c) sketch an x-t graph of the motion of both vehicles. take x = 0 at the intersection.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 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 energy added you so much!

I) a gas contained within a piston-cylinder assembly undergoes two processes, a and b, between the same end states, 1 and 2, where p1 = 10 bar, v1 = 0.1 m3 , u1 = 400 kj and p2 = 1 bar, v2 = 1.0 m3 , u2 = 200 kj: ' process a: process from 1 to 2 during which the pressure-volume relation is pv = constant. ' process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to state 2. kinetic and potential energy effects can be ignored. for each of the processes a and b, a) sketch the process on a p-v diagram. b) evaluate the work, in kj. c) evaluate the heat transfer, in kj.(ans : qb,12 = -65.0 kj)