What are all the subsets?

Acar with a mass of 600 kg is traveling at a velocity of 10m/s. how much kinetic energy does it have?

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling