Hi guys. im doing a project at school where we have to create a mouse trap powered car. i wanted to know what materials are a must have to make the car move more than 5 meters?

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

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.