If you want to lift a 5-kg box to a height of 2 meters, how much work must be done?
A. 100 J
B. 98 J
C. 50 J
D. 2 J

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.