Which describes a trains acceleration if it changes speed from 25 m/s to 10 m/s in 240s

The acceleration of the train will be

Explanation:

Acceleration is defined as the rate of change of velocity of an object.

Mathematically,

where,

a = acceleration

= Change in velocity

t = Time

We are Given:

Putting values in above equation, we get:

Negative sign implies this is the negative acceleration.

Hence, the acceleration of the train is

c. convergent boundary.

explanation:

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.