What is the acceleration of a car that slows down from 60 m/s to 40 m/s during a period of 10 seconds

Acceleration is the variation of Velocity in time :

  (1)

This can be written as:

  (2)

Where:

 is the final velocity

 is the initial velocity

 is the final time

 is the initial time

Finally:

The negative sign means the car is desaccelerating

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.