Purdue university engineers created a machine to test what age-old question?

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope.describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass