1. A proton and an antiproton collide in a particle accelerator and convert their mass into energy. How much energy is produced if the mass of each particle is 1.7x10-27 kg? To receive full credit, show all of your work in the space below.
2. How much energy is required to lift a 9 kg (20 lb) bag of rice from the floor to the trunk of your car located 0.9 meters above the ground? What kind of energy does the rice have when it is sitting in your trunk? To receive full credit, show all of your work in the space below.
3. A roller coaster with a mass of 1000 kg is shot to a speed of 30 m/s in 8 seconds. How much kinetic energy does this coaster have at the end of the 8 seconds? To receive full credit, show all of your work in the space below.
4. Your record bicycle pace along a favorite trail is 16 mph. On a recent ride, you traveled the 25 mile route in a time of 90 minutes. What was your average speed? Did it break your record pace?