Question

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

Answer 1

4 m/s2 in negative acceleration

Step-by-step explanation:

If An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds, it is 4 m/s2 in negative acceleration.

Hope this helps!

Answer 2

`-4(m)/(s^2)`

Step-by-step explanation:

The object changes its speed over some time, this means that there is an acceleration.

It has a uniformly accelerated movement.

The Formula for finding speed in a uniformly accelerated motion is

`a=(V_(f)-V_(o))/(t)`

`V_(o)= 65(m)/(s)\\V_(f)= 25(m)/(s) \\t= 10s`

Replace

`a=((25-65)(m)/(s) )/(10 s)\\ a=(-40(m)/(s) )/(10s)\\a= -4(m)/(s^2)`

Acceleration gives us a negative value this means that it is slowing.