Match each scientist with his major discovery or contribution. 1. ernest rutherford discovery of the electron 2. james chadwick discovery of the neutron 3. henri becquerel discovery of the atomic nucleus 4. j. j. thomson discovery of radioactivity

Aman does 500 j of work pushing a car a distance of 2 m. how much force does he apply? assume there is no friction. a. 250 n b. 1000 n c. 125 n d. 500 n

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?