the train took 80s to reduce its speed from 84m/s to 42m/s . explain why with the same braking force the train takes more than 80s to reduce its reduce its speed its speed from 42m/s to zero

asthenosphere and convection

mistakes are ok

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.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.