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Energy

Science

QuestionAnswer
How would you describe a force? A force is a push or pull of an object.
When _______________ is used to apply force, objects can move. energy
Tomas struggles to open a jar, but the lid does not budge. Is Tomas doing work? Explain. Because work requires that a force move something a certain distance, Tomas is not doing work.
What two factors affect how much work is done in any given action? The two factors are force and distance.
Hint: work = force x distance A grandfather lifts a baby 1.5 m with an upward force of 80N. How much work is being done? Work = fork x distance Work = 80N x 1.5m Work = 120 N-m or 120J.
How do you calculate power? Power = work/time Since work equals force times distance Power = Force times distance divided by time
What is the difference in power between a 60 watt lightbulb and a 100 watt lightbulb? The 60 watt lightbulb transfers less energy per unit of time.
How are energy an motion related? It takes energy for motion to occur.
Is work done when you hold a heavy object for a long time? Why or why not? It take force to hold an object, but no work is being done if the object does not move a distance.
Created by: Senatore
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