1. If you weigh 140 lbs on Earth, what is your mass in kilograms
2.Using the answer from problem I (hopefully it's correct), determine your weight in Newton's if you were on the moon. Yes, you have to look up something to complete this problem.
3. You measured the mass of a rock to be 355g. What is its weight?
4.You are now holding the rock in your hand from problem 3. What force is the rock on your hand? How much force do you need to exert on the rock to hold in stationary.