A. 9.8J

If a 1 kg book is lifted to 1m above the table and the table is 1m above the floor, what would be the potential energy of the book if the reference level were the floor?

a. 9.8 J

b. 9.80 J

c. 19. 6 J

d. 1.96 J

Given:

m = 1kg.

g = 9.8 m/s²

h = 1m.

P.E = ?

Solution:

P.E = m•g•h

P.E = 1kg • 9.8m/s² • 1m

P.E = 9.8kg. m/s² • 1m

P.E = 9.8kg. m²/s² or 9.8J

Hope it helps!