A constant braking force of 1000N(newton) is applied to a car of mass 500kg.

A. What will be the deceleration ?

B. if it was originally going at 20ms‐¹, how long will it take to bring it to rest?

C. How far will it travel while braking?

How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

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