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1.8kg 42J 9.8 how high is the shelf

1.8kg 42J 9.8 how high is the shelf
asked 134k views
5 votes
1.8kg 42J 9.8 how high is the shelf

asked
User Oskarth
by
7.7k points

1 Answer

2 votes

Answer:

2.38m

Step-by-step explanation:

Use potential energy

PE= mgh

42= 1.8*9.8*h

solve for h

to get h= 2.38 m

answered
User Ssmith
by
7.2k points
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