Problem: How to adapt a mousetrap car for speed
Shorten the lever arm.
Installing a shorter lever arm is the best way to adapt a racer for speed. However, if the lever is too short, it will spin out.

Answer: There is no precise formula for how long the lever should be. Experiment to see how short you can get the lever while maintaining control of the car.

Problem: Clips of women and men are pole vaulting indoors while a lot of people are moving about around them or just watching, and a banner at the bottom reads that it's at "texas elite pole vaulting competition bell county expo center on 12 28 13". as various clips of different people

Answer: are pole vaulting, a man and woman are standing indoors next to one another and talking to the camera with the words at the bottom of the screen say their names are kaitlin petrillose & jack chapman competitor & chairman ".

Problem: How to follow the right diet for psoriasis
Calculate your body mass index (bmi).
Your bmi is a number used to indicate your level of body fat. Use an online bmi calculator to find your bmi.
Answer: All you'll need to enter is your weight and height. Ranges have been created to show which numbers are healthy, overweight, or obese.