What is the potential energy of an object...

Question 1 of 270705eccef9fbacbc34ba4d46bec

What is the potential energy of an object weighing 10 pounds (4.54 kg) at a height of 10 feet (3.05 m)?

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Question 1 of 27070

Q

What is the potential energy of an object weighing 10 pounds (4.54 kg) at a height of 10 feet (3.05 m)?

🔍 Key Concepts

• Formula for potential energy in terms of weight and height (in English units): PE = weight × height, giving units of foot-pounds (ft-lb). • Recognize that the weight is already given in pounds, so you do NOT need to convert mass to weight for the ft-lb part. • Match the calculated ft-lb value to the closest numerical choice before worrying about the kg-m values.

💭 Think About

• First, ignore the metric numbers and focus only on the English units: with a weight of 10 lb at a height of 10 ft, what simple multiplication would you do? • After you compute the ft-lb, look through the answer choices and see which one has that same ft-lb value. • Ask yourself: does potential energy go up linearly with height, weight, or both in this basic formula?

✅ Before You Answer

• Be sure you are using weight (lb), not mass (kg), in the English-unit calculation. • Confirm your units: the result should be in ft-lb, not ft or lb alone. • Once you have the ft-lb value, verify that exactly one answer choice has that same ft-lb number before you consider the kg-m side.