8. A scientist designed an investigation to measure the distance required to stop a car on several different road surfaces. The car was traveling at a speed of 10 m/s at the beginning of each trial. Below are the results of her investigation. Which conclusion is best supported by the data from her investigation? The force of friction is greatest on asphalt. The forward force from the engine was greatest on ice. The forward force from the engine was greatest on asphalt. The force of friction is greatest on ice.