Register
A roller coaster, traveling with an initial speed of 21 m/s, decelerates uniformly at -3.5 m/s2 to a full stop. How far does the roller coaster travel during its deceleration?
198,300 views
40 votes
40 votes
A roller coaster, traveling with an initial speed of 21 m/s, decelerates uniformly at -3.5

m/s2 to a full stop. How far does the roller coaster travel during its deceleration?

User Jianjian Yang
by
2.7k points

1 Answer

20 votes
20 votes

Answer:

S = Vo t + 1/2 a t^2 distance traveled

t = (V2 - V1) / a = (0 - 21) / -3.5 = 6 sec time to stop

S = 21 * 6 - 3.5 * 6^2 / 2 = 63 m distance traveled

User Kokovin Vladislav
by
3.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

Other Questions

If a constant fotce of 490 newtons is applied to an object and it proceeds to accelerate in the opposjte direction at 9.8 meters per second, every second, what is its mass?
1. if i start with 48 ml of water in a graduated cylinder, after submerging an object the water level rises to 63 ml, what is the volume of the object. 2. if i start with 36 ml of water in a graduated
Why is the system of si unit developed
A scientist uses a camera to study the stars. How would the scientist most likely use this technology? -to replace all of the old data about stars -to predict the star count over a broad area -to write
Why, when building a house, all its walls are laid at the same height at the same time?​
Link Copied!