Mini-Quiz: Starting Rolling Motion

1. Why should you accelerate your car slowly when on slippery pavement?

   You don't want the torque to be greater than the low static frictionThat is correct. You are doing a great job. The law states that you are required to start slowly or you will be ticketedGood try, but not right. Select another answer. The friction is much higher on slippery pavement, making it dangerousSorry, not correct. Try another button.

2. Where is the best place to push on a wheel to get it rolling in that direction?

   Near the topCorrect. You understand about traction. Near the bottomOops! Wrong answer. Re-read the question and try again. You can't make it roll by pushingSorry, not correct. Try another button.

3. When you push on a wheel on pavement, why does it start rolling?

   No, they only work in mudGood try, but not right. Select another answer. Static sliding friction between the wheel and the pavement causes it to tilt on its pivot pointThat is correct. You are doing a great job. No one is really sure, since it never has been triedOops! Wrong answer. Re-read the question and try again.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.