Explain how you know that gasoline burning in a car engine is a chemical change.?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?