How do we define a force?

A weightlifter lifts a weight over his head with a force of 20 Newtons a distance of 2 meters. How much work did he do?

What is the unit of measurement for force?

A rose plant has been turned on its side. Which of the following best describes what will happen to the plant?

Which substance cannot be decomposed into simpler substances?

What evidence proves that no work is being done on an object?

Which situation describes a chemical reaction?

Which molecule in the equation for photosynthesis represents food energy made by plants?

As food moves through the human digestive system, which change occurs?

Which of the following is the correct formula for work?

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