A car rolls down hill and accelerates form 1.6m/s to 9.3 m/s. If the acceleration caused by the hill is 2.5m/s^2 the amount of time the car was on the hill is?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

What is the temperature in degrees celsius of a substance with a tempature of 49k

What determines the amount of inertia an object has