Question

An object is moving east, and it’s velocity changes from 65 m/s to 25 m/s in 10 seconds.which describes acceleration

Answer 1

The acceleration of object is -4 ms⁻²

Explanation:

We are given:

Initial Velocity = 65 m/s

Final Velocity = 25 m/s

Time t = 10 seconds

We need to find acceleration.

The formula used to find acceleration is:
`Acceleration=(Final\:Velocity-Initial\:Velocity)/(Time)`

Putting value in the formula and finding acceleration:

`Acceleration=(Final\:Velocity-Initial\:Velocity)/(Time)\\Acceleration=(25-65)/(10)\\Acceleration=(-40)/(10)\\Acceleration=-4\:ms^(-2)`

So, acceleration of object is -4 ms⁻²