Aset of keys slides along the floor, coming to rest 1.4 meters from where it started. if the initial speed of the keys was 2.1m/s , then the acceleration of the keys is ?

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

Which of the following are appropriate acceleration units?

Ways that industry and agriculture use physical properties to separate substances