Answer to Question #83736 in Physics for hykhkyi

Question #83736
A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s.
But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?
1
Expert's answer
2018-12-11T15:30:44-0500

Answer on Question 83736, Physics, Other

Question:

A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?

Solution:

We can find the average acceleration of the roller coaster car from the kinematic equation:

"v_f=v_i+at,"

here,

"v_i"

is the initial speed of the car as it starts down the slope,

"v_f"

is the final speed of the car at the bottom of the slope,

"a"

is the average acceleration of the car and

"t"

is the time.

Then, from this formula we can find the average acceleration of the car:

"a=(v_f-v_i)\/t=(22 m\/s - 4 m\/s)\/3 s=6 m\/s^2."

Answer:

"a=6 m\/s^2"

.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS