1. Show that there is a 600-J increase in potential energy when a 20-kg block of ice is lifted a vertical distance of 3 m.
Kinetic energy: KE =
2. Calculate the number of joules of kinetic energy a 1-kg parrot has when it flies at 6 m/s.
3. Show that the kinetic energy of a 3-kg dog running at a speed of 4 m/s is 24 J.
Work-energy theorem: Work
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