If a penny is dropped from rest from a building takes 2 seconds to hit the ground, calculate the velocity of the penny right before it touches the ground? a. 19.6 m/s
b 9.8 m/s
c. 0 m/s
d 29.4 m/s

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

The air that we breath is made mostly of which gaseous molecule

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance