# Question #43247

##### 2 Answers

Oct 13, 2017

#### Answer:

#### Explanation:

The formula relating velocity under constant acceleration is:

Each variable, and the known values for this problem, are shown below:

Substituting into the formula:

Oct 13, 2017

#### Answer:

#### Explanation:

The velocity when roller coaster starts down the slope is

That is, it's initial velocity is

After

That is, it's final velocity is

Using formula,