Gerry’s cell phone slipped out of his pocket and fell to the ground. The phone had a mass of 0.22 kg and Gerry’s pocket was 1.2 meters above the ground. When the phone hit the ground, the impact took 0.1 seconds. What was the phone's kinetic energy when it hit the ground? What was the phone's velocity when it hit the ground?
What was the phone's momentum when it hit the ground?
How much force was applied to the phone by the ground?
What are the correct units for each answer?

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.