3. Two carts, cart A and cart B, are moving in opposite directions. Cart A is moving away from a motion
detector at 2 m/s and cart B is moving toward the
motion detector at 1 m/s.
a. Which cart's velocity would be positive and
which would be negative? Describe your
reasoning

Fossil fuels are organic compounds that are made from

Which statement are accurate about snow flakes

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt