Dear branily, Don't delete MY question/answer WITHOUT LOOKING at it first. Why is it so hard just for you to look at the question to see if the report is true or not? You don't know how many times I got falsely reported. AT this point hate me, so This is my last question 1. What does a volume (in milliliters) measures.
2. What does a mass (in grams) measures?
3. What does a temperature (in degrees Celsius) measures?
4. What does a Graduated Cylinder measures.
5. What does a Thermometer measures (I know this one but it's part of the question so ya)

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?