Question

A roller coaster accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

Answer 1

`\boxed{ \bold{ \huge{ \boxed{ \sf{16 \: m/ {s} \: ^(2) }}}}}`

Explanation:

Given,

Initial velocity ( u ) = 6 m/s

Final velocity ( v ) = 70 m/s

Time ( t ) = 4 seconds

Acceleration ( a ) = ?

Finding the acceleration

We know that,

`\boxed{\sf{acceleration = (v - u)/(t) }}`

⇒
`\sf{ (70 - 6)/(4) }`

⇒
`\sf{ (64)/(4) }`

⇒
`\sf{16 \: m/ {s}^(2) }`

Hope I helped!

Best regards!

Answer 2

Acceleration=finalpoint-initialpoint/time
70m/s-6m/s/4
The answer is 16m/s^2