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What two things need to occur for work to be done on an object?

What two things need to occur for work to be done on an object?. An object must move a distance as a result of a force The force exerted must be in the same direction as the objects motion. What is another name for a joule?. a newton -meter.

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What two things need to occur for work to be done on an object?

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  1. What two things need to occur for work to be done on an object? • An object must move a distance as a result of a force • The force exerted must be in the same direction as the objects motion

  2. What is another name for a joule? a newton-meter

  3. A cyclist exerts a force of 40 newtons for a distance of 5 meters. How much work was done by the cyclist? 40N X 5 m = 200 joules or newton-meters

  4. What is the formula for work? Force times distance

  5. What is the formula for finding power? Power = work divided by time

  6. The amount of work done in lifting four 10-N sacks of oranges 3 meters is the same as lifting two 30 N sacks of apples how far? 2 meters

  7. Two dogs are digging separate holes in the ground. Sydney does 300 j of work in 3 seconds and duke does 300 j of work in 4 seconds. What is the difference between the two? Power – 25 watts

  8. What is the unit of measure for power? watt

  9. A motor on a boat exerts a force of 2,000 newtons. It propels the boat 12 meters in 8 seconds. What is the power output? (2000 X 12) divided by 8 =3000 watts

  10. Define power The rate at which work is done

  11. What is the unit of measure for work joule

  12. A steel box with a mass of 10kg was lifted 3 meters in 4 seconds.How much force was used? 10 X 9.81 = 98.1 newtons

  13. A steel box with a mass of 10kg was lifted 3 meters in 4 seconds.How much work was performed? (10 X 9.31) X 3 = 294.3 joules

  14. A steel box with a mass of 10kg was lifted 3 meters in 4 seconds.How much power was used? (10 X 9.81) X 3 divided by 4 = 73.575w

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