You are driving at 50 m/a when you hit your brakes for 5 seconds. your new speed is 30 m/s. what was your acceleration

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.

What practical value did astronomy offer to ancient civilizations?