Question

A ball is moving up an inclined plane, when it's velocity changes from 15m/s to 7m/s in 3 seconds . What is the acceleration.​

Answer 1

Step-by-step explanation:

`a = (change \: in \: velocity)/(change \: in \: time)`

`a = (v - u)/(t)`

`v = 7 {ms}^( - 1)`

`u = 15 {ms}^( - 1)`

`t = 3 \: seconds`

`a = (7 - 15)/(3)`

`a = ( - 8)/(3)`

`a = - 2.67 \: {ms}^( - 2)`