Question

Karla and Vanessa are in their mom's new Chevy Silverado (m=1814 [kg]). They are at a stop light waiting

for the light to turn green and when it does they accelerate at a rate of 5.5 [m/s?] for 5 seconds, when they
notice another red light and have to hit the brakes to stop. It takes 3 seconds to come to a stop.

Answer 1

The question addresses the physical concepts of acceleration and deceleration in high school Physics as students analyze the motion of a Chevy Silverado accelerating and decelerating using equations of motion.

Step-by-step explanation:

The question involves the concepts of acceleration, deceleration, and motion, which are covered in high school Physics. Karla and Vanessa are in a Chevy Silverado which has a mass of 1814 kg. They accelerate from rest at a stop light at a rate of 5.5 m/s² for 5 seconds and then they decelerate to a stop in 3 seconds. To analyze this scenario, one would need to use the equations of motion to calculate the initial and final velocities, distances, and the overall time taken during the motion. Similarly, if we have a different situation where a truck is trying to stop to avoid hitting a child, one could also use the equations of motion to determine whether the truck can stop in time.

For instance, calculating the stopping distance for a truck traveling at 10 m/s when the driver applies brakes with a deceleration of -1.25 m/s² and has a reaction time of 0.5 seconds, can help predict the outcome of the emergency stop.