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?

plz, show the equation.

Answer 1

6m/s²

Step-by-step explanation:

Given parameters:

Initial velocity = 4m/s

Time = 3s

Final velocity = 22m/s

Unknown:

Average acceleration = ?

Solution:

Acceleration is the rate of change of velocity with time taken.

Acceleration =
`(Final velocity - Initial velocity )/(Time)`

Acceleration =
`(22 - 4)/(3)` = 6m/s²